I missed out on the voodoo2 days with my first real 3D card being a V3 3000, so in order to make up for missing out, I have the following parts coming for a retro gaming machince:

PII 350
ASUS P2B
128MB PC100
1 BlackMagic II
1 Diamond Monster II
Matrox Millenium

my questions are:

will these cards work in SLI?  If not, what do i want for an SLI setup?
what OS is best for playing old glide games?
what else should i know about a setup like this?