If IE is acting up on you, try the following: Troubleshoot IE Explorer using these tricks; or apply Microsoft patches from here
In the near future, you might want to consider moving to Windows 2000 Professional or Windows XP (I would recommend Professional). Windows 2000 with service pack 3 (two weeks old) is very, very stable, and Windows XP's first service pack was supposed to hit the streets last Friday. As time goes on, fewer and fewer applications will run under Win9x operating systems, and at some point down the road you'll have to move up.
When you get ready, let me know ... I have some rules of thumb ...