I've migated to W2000 from W98SE. IMHO, W98 is a virus unto itself. W2000 is so much more stable. Nonetheless, I do a few things to keep it running:
1. defrag my hard drives every 2 weeks or so, or when I add or remove software
2. I use Window Washer after every browser or mail session to clean out history, cache, cookies, temp files, etc. It not only deletes the files, but it overwrites the slack file space and performs a security overwrite that complies with US govt. specs.
3. I use BlaceIce as my firewall
4. Download the weekly DAT files for Norton Anti-Virus (and do a full scan every few weeks)
5. I don't use IE unless it's an emergency or I need to download a W2000 security patch
6. I don't use Norton Utilities because my experience is that Norton "fixes" things that aren't broken. I had lots of problems with Norton "fixing" the registry keys that NS 4.79 uses.... I finally figured out which file associations it was changing, but I won't use Norton again, except for its anti-virus program.
7. To clean out the registry, I use EasyCleaner and RegScrubXP, both free programs. They work well and don't mess up the registry (I've tested a lot of cleaners, and I like these the best). Moreover, they archive all changes so you can restore any change you make. And I use Erunt to back up the W2000 registry (it also defrags the registry hives -- a really nice feature).
8. I also back up to CD-R.. just in case....
Long live Mozilla/NS
UserAgent: Mozilla/5.0 (Windows; U; WinNT; en; Stable) Gecko/20020911 Beonex/0.8.1-stable