What do i need to upgrade to play in 3D?

[sswats]

I've recently bought the Acer H5360 3D NVidia compatible projector.
It only runs at 1280x720 so shouldn't need to much power to run games in 3D

My current spec is-
C2D E4300
4gb Ram
ATi HD4850
Corsair HX520.

So what Nvidia graphics card would i need to play games at decent detail?

Or what can I do on the Ati side of things to get to play games in 3D?

 

[sswats]

But from what i understand, to get a decent frame rate with high detail on most games you want at least a 470, I'm sure others will correct me if i'm wrong.

Even at 720P.
And isn't texture quality and detail not as important in 3d gaming as its more of a blurred image. So you can drop the detail a bit?

I play all types of games, but most likely on this 3d projector its going to be FPS's and action games (res probably too low for RTS games). And I don't want to spend too much because I also have to buy the glasses. So about a #130 for the graphics card, max.

 

[sswats]

CPU is running at 2.7GHz which is its overclocking stable limit.

How much are stereoscopic shutter glasses if I do stick with ATi?
And will those have any chance of working with PS3 for games or 3D blurays? I know the Nvidia ones don't.