anyone running SLI ?

I'm considering building a new PC soon., maybe.
The rig I run games on is getting a bit old with a Intel 1600 @ 2400 on a Abit BD7R wid 512Mb Ram and a Ti4600 card.
It runs FS2004 ok ish, but I know a new PC would give a big boost.
I do have a 'working PC' that is a P4P800 with Intel 2.8 @ 3.2, 1024Mb RAM and a crap video card, that I wouldn't even attempt to load FS9.
I may wait until the new Intel chips are released (initial reports look good) (may wait til Vista is here too).
But i spose the Q I have is, what are peoples experience with SLI graphics and FS9?
I'd either get a single 7900GTX or dual 7900GT in SLI mode.
I'd like to get the solution that would run FS9 better as I can see that taking up most of my gaming time. But then I spose FS10 will be here by that time, and may favour SLI (or not!)
My target resolution will be at least 1600x1200 but preferably playable at 1920x1200.
divulge your thoughts please.
The rig I run games on is getting a bit old with a Intel 1600 @ 2400 on a Abit BD7R wid 512Mb Ram and a Ti4600 card.
It runs FS2004 ok ish, but I know a new PC would give a big boost.
I do have a 'working PC' that is a P4P800 with Intel 2.8 @ 3.2, 1024Mb RAM and a crap video card, that I wouldn't even attempt to load FS9.
I may wait until the new Intel chips are released (initial reports look good) (may wait til Vista is here too).
But i spose the Q I have is, what are peoples experience with SLI graphics and FS9?
I'd either get a single 7900GTX or dual 7900GT in SLI mode.
I'd like to get the solution that would run FS9 better as I can see that taking up most of my gaming time. But then I spose FS10 will be here by that time, and may favour SLI (or not!)
My target resolution will be at least 1600x1200 but preferably playable at 1920x1200.
divulge your thoughts please.