Supersampling Doesn't work

[t33lo]

I have tried setting Supersampling to "ON" for both global settings and a specific game. It still isn't showing up. I have antialiasing enabled as well. I have messed with every setting and combination and it still isn't showing up in my games. Is there some restriction in 64-bit windows that doesn't allow it? I remember I could use it on my 7800gtx with xp 32 bit, and now I have xp 64 bit with gtx 275. I even tried rolling back to an older driver and still no luck. Any help would be greatly appreciated. Thank you.

 

[t33lo]

I went with 64-bit because of the increase in RAM, but not sure what else it improves. I'll probably just install vista so I can get DX10 support.