Thanks bro :]
Bear in mind that these are all at a 1400x900 resolution though, if you have a higher resolution screen then the specs will be higher.
Edit : Just saw your edit.
Bearing in mind the trailer is 360 graphics (PC's will be a little better) how did your 8600GT perform with oblivion? It gives me an idea about its capabilities.
It runs Oblivion on the highest graphics settings...with the exception of when grass shadows are on. I turned that off but everything else is turned on/set to high. I run the game at 1280/800 resolution and I have AA set to X2...though I could probably go higher. I just never bothered to.
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With these settings, I typically see no slow down other than what you may normally see when it's loading trees in and etc on occasion. Usually, it's a smooth game-play experience.
So just to make it easier and in one post, here are my system specs:
Windows Vista
Intel Duo Core E6550 2.33 ghz processor
3 gigs of RAM
Nvidia 8600 GT w/ 256 Megs of RAM
My guess is my system will run Skyrim but it won't necessarily be pretty. But, with things turned down to low, I bet the game will play smoothly in most situations.
However, I still think my xbox is the way to go for me. It will probably look nicer and play smoother than my PC will be able to handle.