Depends on how badly the machine is messed up. You may not find it worthwhile loading anything, just starting from scratch.
If you can get it to run in safe mode, you can always find out what drivers you are going to need by using the control panel > Device Manager (often under System Settings - while since I used Win 98
), From there you can trawl through the various devices, note what the hardware definitions are and then trawl the net for matching drivers to download. If the driver definition says it's provided by Microsoft then you don't need to find a new version, that will be on the Win 98 CD.