I have 2 3dfx 12 meg cards and am looking for driver for directx9 & direct3d anybody help[:I]

What's your OS ?

Come here and choose your platform: https://www.3dfxzone.it/dir/3dfx/voodoo2/drivers.htm

If you're using two cards with different brands, look for version fastvoodoo 4.6, which comes with support for mismatched SLI (mismatched brand cards for scanline interleaving).

Nothing special must be done to sli to work... Just install the same driver for both cards detected (and ensure to have older drivers swept away).