I bloody hate W98 power management but managed to figure it out:
* Windows API is the primary power controler when in Windows mode
* BIOS Power Management is for when your in DOS mode
I wouldnt recommend disabling the PM altogether. If you want to extend the life of your HDD (by not having to boot up every time you use the computer) set to suspend to RAM ("Sys Standby" + "Turn Off Monitor") mode but NEVER suspend to Disk ("Turn Off HD"). STD creates the worst bloody problems.
I havent looked at "Hibernate" and dont want to either. Sounds like another thing that can screw up your day.
PS Yeh cancel any screensavers you have. Thats a worm in the can you can kill right now.