<< as i recall if you wonted to get a vodoo 1 you had to have a 2D card beside the vodoo is that right why isnt it possible ??? >>
Voodoo1 and Voodoo2 were 3D only cards, and used a passthrough cable.
The 2D card send it's 2D image to the V1/V2 and then the V1/V2 connected to the monitor. The 3D card would need a Video in port to do this. The V1/V2 were designed specifically to be 3D only with 2D passed through, the GF2 is 2D and 3D.
You could do it, get a GF2 on AGP and a Matrox PCI card.
Win98 and Win2k both support Dual Video card/Dual monitor configs.
What you'd have to do is set it up for that (make sure you make the GF2 your primary as 3D stuff won't work on the seconday display), but if you only have 1 monitor you'd have to swap the cable between video cards. Both cards would always be outputting something, but you can just not connect the one you don't want.
I think you'd be better off just getting a Radeon (LE if money is an issue), the 2D there is damn near as nice as Matrox, and the 3D speed is on par with a GF2. And saves you swapping the cable when you want to fire up a game.