(coldpack)
did you come from a time machine from the past?
Lol.
Can you get a picture of the card out? Might have some ideas if I see what holes (if any) already exist, and where the processor/memory modules are.
First thing that comes to mind is you could basically glue a small fan, like a chipset fan, onto the processor with Arctic Silver Thermal Adhesive. Dunno how it would hold since it'll be upside down, but as long as you don't try to twist it off it'd work. Or you could just put a good copper/aluminum heatsink on it with the same paste and mount an 80mm fan underneath or next to it.
Edit:
Found this after a google search, turns out cooling the ram down a bit could help out.
http://nightstormer.tripod.com/voodoo_article4.htm
Also I forgot, if you already have some AS5/ceramique you could use that and a bit of superglue instead of purchasing the adhesive.
I like how it starts out "I know that the V3 is old hardware" and it was written in 2000...