Gordon,
Your problem likely has nothing to do with the Voodoo 3 video card.
If your machine is equipped with an ethernet card, then on boot up, it will sit and poll the card repeatedly looking for a DHCP server for network settings. If no DHCP server is found the machine won't finish booting until it times out. To resolve this, you can specify a non-routable IP address in the TCP/IP settings for the machine.
Something like 192.168.0.1 will work just dandy.
Knutsaq.