Can you post your specs?
Then we can tell you what parts to keep, and which to upgrade, saving you valuable money!
I don't want to make a computer specifically for just Skyrim, I would like to upgrade it all the while. I have a motherboard with an AGP slot, and that's all. That needs all the upgrading in hell.
2.4 GHz processor, Intel Pentium 4
1.5GB memory, DDR (motherboard has four DDR slots, also not good)
NVIDIA Geforce 7300 GT, 512 MB, DDR2
Unless you need more information, that's all I can get for now. I do not know the wattage on my PSU or whatever.
Also, pecon, the video card is deactivated. :l I would also like a 1GB card, if I can fit it in with my low budget.