WHY DO I HAVE TO REINSTALL 9X?
With Windows 95, sometimes you have to reinstall due to a corrupted registry. With 98, the possibility of a corrupted registry is less likely, even though it may still happen. Or some of the 9x system files (i.e., DLL and VXD) may be corrupted, and you don't know which of the files are bad. Lastly, perhaps you just like to clean up your system by completely starting over from scratch.

Because reinstalling 9x means you have to reconfigure and reinstall your applications, you should do it only as a last resort to determine if the problem is a software issue or not.

TWO METHODS OF REINSTALLING 9X
There are two ways of reinstalling 9x: