I've used this before when I suspected a bad stick. It didn't really seem to do anything, at least not that I understood. I ran the test (which took forever) and it never reported anything. It just started over again when it was done. Maybe I did something wrong.
That just means no errors were detected. If an error is detected it will be reported in the bottom window. The reason the test takes forever is that it's testing for a lot of subtle problems that might only show up under unusual circumstances.
There is an update available, but it doesn't say anything about AGP fixes. I know there's a misidentification issue with this board that it would fix (my 1700+ is reported as an 1800+).
This could mean that the board is overclocking your processor... 1700+ -> 1800+ isn't exactly a huge jump though (something like 60MHz).
Eh? I'm not sure what this would mean, or what drivers I should try. I've only tried nVIDIA detonator drivers up until now. I'm not sure what you're telling me to do. (sorry... me slow)
Actually, just booting in Safe Mode should have the same effect. IIRC the preferred way to get into Safe Mode on Win98 is to hold the left Control key at boot.
Also, when you go into Device Manager, what name does it show for your hard disk controller?