I'd recommend doing what Ethereal_Dragon suggested first, and post with your results here.
If that still doesn't work, I'll have a link up in this post in a few minutes.
EDIT: Is this your Motherboard?
Click
Do a Ctrl+F for 865G.
Your motherboard would have:
Socket 478, AGP Slot, 3 PCI Slots, and 2 RAM Slots. Is that right?