Like others said, Nvidia's Dualview performance is horrendous under XP, but the latest Vista64 driver resolved this issue. Under XP, my maximum dualview performance is about 50 fps on 1920x1200 and 30 fps on the 1280x1024. Significantly lower than the 100+ fps under Vista64 on both monitors. That's the bonus of running Vista64 now.


Shakey,
I have never played with SLI or dual-GPU before, so I can't speak definitively about your scenario. The best thing is to try the different combos to see how it performs. Do you have Vista to try? Normally I would advise against it, but given its dualview performance, it's worth a shot. I am only using it for WoW and later for Crysis.


About the G keys, I assigned each one to generate Control-A to Control-R. AHK will listen for and issue the same or different key strokes to the 2nd WoW window. I used Sorn's code to identify between main and clone WoW instances.

Example - G1 generates a Control-A. AHK will pass that on to the clone window.

^A::
#IfWinActive, World of Warcraft
{
ControlSend,, {Ctrl down}{A down}{A up}{Ctrl up}, ahk_id %idClone%
}
Return

Those Control-A to Control-R are mapped to macros on the clone window to command my priest to single-button targeted/self heal, nuke, dot, mount, follow, etc. AHK is quite picky on which assigned keystrokes it will be able to detect coming from the G keys. A lot of the Control-Alt or Control-Shift combos just don't work between AHK and the G keys.