|It sounds like you may have done a format c:/s which formats the drive and installs the system files. Booting from that gives a momentary 98 splash screen and then returns you to the c:\> prompt.|
So, what did you do with it between the last time it worked OK and the first time it didn't?
If you do need to reinstall 98 you'll need the installation cd.
Now that's what I call a sticky situation