98 does not like 1g of RAM. This could be posing problems for you. To fix, go to [vcache] section in Windows\system.ini and type the following underneath vcache:
Then reinstall Windows over itself. This will save all your other installations and setups.
A big thanks to Crashman for teaching me this stuff a couple of years ago. I've been able to run SE very stable in my own office and for most of my outside customers using his advice. It's a solid OS and networks peer-to-peer like a dream.