Those are System Restore files - among the general youckware cleanup steps is the proceedure for clearing and restting System Restore, but for convenience sake, here it is again:
Start>Settings>Control Panel>System
(If you don't see the System icon, go up to the toolbar in Control Panel, click "Tools", click the "View" tab, click "View all Control Panel Options", cick "Apply", then click OK")
In the System Control Panel dialog box, click the "Performance" tab, then click "File System", then click the "Troubleshooting" tab. In the "Troubleshooting" tab, click "Disable System Restore", confirm if prompted, click "OK", and when prompted to restart Windows, click "OK" and allow your system to restart. When it has restarted and before doing anything else, empty your Recycle bin and clear all your temporary files or better yet, run
Cleanup! (which you should already have anyway), reboot once more, go back into Control Panel>System>Performance>File System>Troubleshooting and
UNCLICK "Disable System Restore", click "OK".
That should remove all your previous Restore Points. Windows should set a fresh restore point on your next restart, but you can do it manually as well; Start>Run>type (without the quotes) "msconfig">click "OK" (or hit ENTER)>click "Launch System Restore">click "Create a new Restore Point">click "Next">enter a descriptive name for your new Restore Point>click "Create", be patient, and follow the remaining prompts as they come up.