You might wanna uninstall/reinstall Internet Explorer. That's not anywhere near as scary as it sounds, and usually fixes such problems. Read
This.
Actually, check the version of your browser (from your browser's toolbar Help > About Internet Explore) The current version applicable to Win 98 is IE 6.0.2800.1106, and you should also be sure you have all the latest updates and patches. Here's Microsoft's
IE6 Download Page
Note ... on dialup, this will take a loooong time.