Purely on the off chance that someone may be interested, here is the link to a working Voodoo 5 6000 AGP Rev 3700 that I am selling on ebay.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=230288632317
Sfft
I hope it's not your last one, especially concerning driver deleopment. :)
Greetings from Germany,
Raff