Running two displays as one with vista

All right so i have two acer p221w lcds hooked up to my 8800gt. What i want to do is configure the card so vista sees the two displays as one. By that i mean that instead of having two separate displays the picture will be stretched across the two monitors at a resolution that is both of them combined (sorry if thats confusing). I remember being able to do this with two crts and xp, i could run my desktop and games across the two (aka i could play cod4 at 2560X1024 and have one montior take half and the other take the other half. I dont see and option that will let me do this in the nvidia control panel anymore . Does anybody know how i can get this to work? I would like to be able to use both of my monitors for games. Im running 178.13.

178.24 is for xp , now im getting 181.20. (sigh)

Grrr.... just installed 181.20 and i didnt get a span option, im still stuck with dual-view, clone, and single. This took me under 15 seconds to set up with xp, why cant i do it in stupid vista (oh and ps this works fine for me in linux )

Here is another tread of people with the same problem
http://forums.nvidia.com/index.php?showtopic=21267

Are there any custom drivers that give you a horizontal span option?

That's totally lame. The only thing i can think of is either revert to xp, or check this little thing out.

http://www.matrox.com/graphics/en/products/gxm/th2go/

Horizontal span will just have to be another thing MS fixes in sp2