My ISP dial-up number keeps being changed - please help

My usual ISP telephone number is a freephone number. However now when I try to connect to the internet my modem tries to dial an international number. I can change my connection settings back to their original state and this seems to work for a while but invariably the problem recurs.

I read the "Spyware, Browser Hijacks, or other Yuckware? Check here 1st" entry posted by timberlandko and followed the instructions but this does not seem to have made any difference.

Here's my HJT log:

Logfile of HijackThis v1.98.2
Scan saved at 16:18:58, on 30/09/2004
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\WIDCOMM\Bluetooth Software\bin\btwdins.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
C:\WINDOWS\System32\MsPMSPSv.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Apoint2K\Apoint.exe
C:\WINDOWS\AGRSMMSG.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\HPQ\Quick Launch Buttons\EabServr.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\Program Files\Roxio\Easy CD Creator 6\DragToDisc\DrgToDsc.exe
C:\Program Files\Common Files\Microsoft Shared\Works Shared\WkUFind.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S0BIC1.EXE
C:\WINDOWS\system32\explorer.exe
C:\PROGRA~1\PANICW~1\POP-UP~1\PSFree.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Logitech\MouseWare\system\em_exec.exe
C:\Program Files\Apoint2K\Apntex.exe
C:\Program Files\Palm\HOTSYNC.EXE
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Documents and Settings\Rob\Desktop\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.uk/
O2 - BHO: (no name) - {00320615-B6C2-40A6-8F99-F1C52D674FAD} - (no file)
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: (no name) - {549B5CA7-4A86-11D7-A4DF-000874180BB3} - (no file)
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O2 - BHO: ADP UrlCatcher Class - {F4E04583-354E-4076-BE7D-ED6A80FD66DA} - C:\WINDOWS\System32\msbe.dll
O2 - BHO: (no name) - {FDD3B846-8D59-4ffb-8758-209B6AD74ACC} - (no file)
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O4 - HKLM\..\Run: [Apoint] C:\Program Files\Apoint2K\Apoint.exe
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [Cpqset] C:\Program Files\HPQ\Default Settings\cpqset.exe
O4 - HKLM\..\Run: [eabconfg.cpl] C:\Program Files\HPQ\Quick Launch Buttons\EabServr.exe /Start
O4 - HKLM\..\Run: [Logitech Utility] Logi_MwX.Exe
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [ccRegVfy] "C:\Program Files\Common Files\Symantec Shared\ccRegVfy.exe"
O4 - HKLM\..\Run: [RoxioEngineUtility] "C:\Program Files\Common Files\Roxio Shared\System\EngUtil.exe"
O4 - HKLM\..\Run: [RoxioDragToDisc] "C:\Program Files\Roxio\Easy CD Creator 6\DragToDisc\DrgToDsc.exe"
O4 - HKLM\..\Run: [Microsoft Works Update Detection] C:\Program Files\Common Files\Microsoft Shared\Works Shared\WkUFind.exe
O4 - HKLM\..\Run: [Windows Automation] mslaugh.exe
O4 - HKLM\..\Run: [LimeShop] C:\Program Files\LimeShop\LimeShoprun.exe /cp:p "C:\Program Files\LimeShop\System\Code" Main lp: "C:\Program Files\LimeShop"
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] C:\Program Files\iTunes\iTunesHelper.exe
O4 - HKLM\..\Run: [EPSON Stylus C62 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S0BIC1.EXE /P23 "EPSON Stylus C62 Series" /O5 "LPT1:" /M "Stylus C62"
O4 - HKLM\..\Run: [explorer] C:\WINDOWS\system32\explorer.exe -go -c21 -w
O4 - HKCU\..\Run: [PopUpStopperFreeEdition] "C:\PROGRA~1\PANICW~1\POP-UP~1\PSFree.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [EPSON Stylus C62 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S0BIC1.EXE /A "C:\WINDOWS\System32\E_S55.tmp"
O4 - Startup: HotSync Manager.lnk = C:\Program Files\Palm\HOTSYNC.EXE
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~4\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Send To &Bluetooth - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie_ctx.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - (no file)
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - (no file)
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~4\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra button: iSiloX Clipper - {C86027A6-12A1-4298-B6EA-A42AC6EE6C7C} - (no file) (HKCU)
O9 - Extra 'Tools' menuitem: iSiloX Clipper... - {C86027A6-12A1-4298-B6EA-A42AC6EE6C7C} - (no file) (HKCU)
O16 - DPF: {11111111-1111-1111-1111-111111113457} - file://c:\explorer.cab
O16 - DPF: {15AD4789-CDB4-47E1-A9DA-992EE8E6BAD6} - http://public.windupdates.com/get_file.php?bt=ie&p=88fb4bd1cc748615aaf24d95e9cbeb3358724ab481f8e3efaa749926ff7d88d97236971755bdeddb0fd3efedf2024d26208d:a50669a8a42fe77354145ae90fecae62
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupdate.microsoft.com/v5consumer/V5Controls/en/x86/client/wuweb_site.cab?1095933402455

Any ideas? Anyone?
Thanks

NB
Not sure if this is relevant but when I run Spybot I get the following result. If I try to fix it and then run Spybot again this result still comes up.

DSO Exploit: Data source object exploit (Registry change, nothing done)
HKEY_USERS\S-1-5-18\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\1004!=W=3

DSO Exploit: Data source object exploit (Registry change, nothing done)
HKEY_USERS\S-1-5-21-1078081533-1844237615-839522115-1004\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\1004!=W=3

DSO Exploit: Data source object exploit (Registry change, nothing done)
HKEY_USERS\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\1004!=W=3

DSO Exploit: Data source object exploit (Registry change, nothing done)
HKEY_USERS\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\1004!=W=3

DSO Exploit: Data source object exploit (Registry change, nothing done)
HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\1004!=W=3


--- Spybot - Search && Destroy version: 1.3 ---
2004-08-11 Includes\Cookies.sbi
2004-09-16 Includes\Dialer.sbi
2004-09-16 Includes\Hijackers.sbi
2004-09-16 Includes\Keyloggers.sbi
2004-05-12 Includes\LSP.sbi
2004-09-16 Includes\Malware.sbi
2004-08-12 Includes\Revision.sbi
2004-09-16 Includes\Security.sbi
2004-09-16 Includes\Spybots.sbi
2004-08-30 Includes\Tracks.uti
2004-09-16 Includes\Trojans.sbi