$1000 old alienware gaming rebuild

Here is a better and cheaper PSU, which should be enough: http://www.newegg.com/Product/Prod [...] &Tpk=750tx

If you will overclock then you will need a CPU cooler, like this:
http://www.newegg.com/Product/Prod [...] Tpk=s1283v

The motherboard will probably fit in the case, but you haven't given a clue as to what the case is, so can't say for sure. I am assuming since you said it was big then its a mid/full tower and will fit an ATX MB.

Chances are the HDD that you have is going to be slow, and you could get a much faster one, like this:
http://www.newegg.com/Product/Prod [...] 6822136319
$5 off promo code: EMCLSMR24

If you want to save money, try just using Win 7 RC for now until March of 2010, its free and many people say its better than Vista. In March you will have to buy a license for it.

Maybe think about going with SLI GTX 260's...They will save you a lot of money and one will be total overkill for your current monitor, two should handle any game up to 19x12 res. Unless you are looking at a 30" monitor at 25x16 res, I think GTX 260's would be a better investment...Or perhaps getting 1 HD 4770 now and then two more later in 3-way crossfire...that is probably even more cost effective, as 4770's are supposed to scale very well and end up costing around the same amount as 2 GTX 260's. I am not sure how much running the last PCIe slot at x4 mode (one limitation of the P6T MB) would bottleneck a 4770, as x8 mode seems to be enough for even the 4890 at this point without a bottleneck. The GIGABYTE GA-EX58-UD4P has the last slot running at x8 mode and may be a better option if you went that route.

Nice advice here KID.

Corsair=good PSU
GTX260=overkill for your res, and SLI GTX260 NICE for your futur screen

Ill suggest buying a 24" 19x12 monitor. Thats the biggest i would go for gaming.

I guess you CASE can handle the mobo. But like Kid told, buy a new HDD. The one you have is probably a 8mb cache ... going for a 32mb cache 640 WD is going to be WAY faster.

I7 920 + P6T + SLI GTX260 on the road = nice config + futurproof build !

No build can last years ... youll have to rebuild in 2-3 years for SURE !

have fun !

Hey, thanks for the advice - I really appreciate it.

Recommendations on the cooler, HDD, and psu dually noted.

So about the monitor - I was thinking of getting a nice HD tv to use as the monitor sometime soon. As the resolutions on those things are only 1920x1080 though, I'll take the 260 recommendation and save a couple hundred bucks. Staying with nVidia simply because its what I already know and love.

Finally about windows 7 - never really been on the bleeding edge of things, but from what I read it sounds like a pretty good idea right about now.

Best part - total w/ all that stuff added in is less than before. Thanks again.