Directx 9a for win98
Also look on any pc magazine for a cover disc. It will definitely be on there. (At least 8.1)
Go here for a program that will tell you everything about your pc hardware etc.
to find your motherboard manual so you can reset the bios etc.
After that mate post back and i will see if i can help some more.
Usually when you clear the cmos you have to turn the pc off, change the jumper over for about a minute, then put it back to its original position. Then turn the pc back on.