I bought iMac Voodoo 2, now how does OpenGL work for me?

I have tried to read some of the other postings about this, but I am still confused. What drivers do I need, where do I get them, how do I install them, should I get 1.2 version? Inquiring minds, mine, want to know.

visit this webpage:
http://www.doomhammer.com/Oni/imac_voodoo2.html