Depends on whether you want to run vanilla skyrim or with 100+ mods. I for one can't play skyrim without graphical overhaul from an enb mod. The difference is night and day, skyrim with ENB looks better than Ryse or any other next gen game. With an enb running the atmosphere is nothing short of astounding, you'll completely get absorbed into the game. So much, you'll feel sorry for people playing skyrim on consoles. 

Click below for epicness. My own screenshots are of course horribly compressed.

http://skyrim.nexusmods.com/mods/23812//?
http://skyrim.nexusmods.com/mods/23812//?
http://skyrim.nexusmods.com/mods/24828/?

My own screenshots below:

http://imageshack.us/photo/my-images/543/screenshot150t.png/
http://imageshack.us/photo/my-images/7/screenshot174t.png/

http://www.mediafire.com/view/myfiles/#ak8d5wsj57qpad4

http://www.mediafire.com/view/myfiles/#m3ojs90t51hanr4

http://www.mediafire.com/view/myfiles/#spq8e6xwxagpkw6

If you want a smooth experience running an enb at high/ultra than you need  no less than 7950. The cheapest one is £173 at either of those retailers I mentioned. They come with 3 free games of your choice, including far cry 3, saints row 4, tomb raider, sleeping dogs etc 

http://sites.amd.com/us/promo/never-settle/Pages/nsreloadedforever.aspx

cool thanks for another option. I could see it being fun putting a pc together. As it will be my first time I am little nervous as it might be overwhelming or i'll mess somthing up, or just wont work. Now i have 2 builds to look over and review.

ya the screens look outstanding! would love to dive into that (if i can run it). I guess in the future if the the 7850 is not what I hoped for I will upgrade to 7950 or greater to meet me wanna be high end gaming needs

I also have and HD 7950 at 1150, but at 1500 mhz memory its great with mods on Skyrim but I have a 2500k, great for Dolphin emulator too!

Here its a review of the Prodigy, the hardest part its cable management and with a PSU like the TX they still made it without much problem

http://www.legitreviews.com/bitfenix-prodigy-mini-itx-case-review_1986/5

After that the real problems of a build are the software part LOL everything else its just  basic screwdriver nothing more.

Make sure you get MSI brand buddy, their cards overclocks amazingly well for some reason. Their twin forzr series has good cooling performance. Also if you're buying components from self build, I recommend, scan.co.uk. They have scan insurance for just £5, they'll replace any parts damaged during assembly, gives you a peace of mind for the first time :) I believe you'll also get to choose two free games if you buy 7850. :)

HD 7850 will run skyrim with an enb at high/medium with a stable framerate imo. The screenshots from imageshack links were from when I had an HD 5850, was running an enb mod at medium settings. Still looks miles better than vanilla skyrim at ultra imo. 

For the case I would recommend http://www.trustedreviews.com/Antec-Nine-Hundred-Ultimate-Gaming-Case_Peripheral_review , its the one I have, very spacious, plenty of vents and fans for a good air flow, dust filters at the front can easily be taken off and cleaned as well.

What Bruxel picked up at the end?

He made a separate thread for it:

http://gamrconnect.vgchartz.com/thread.php?id=170742