Motherboard: ASRock FM2A55M-DGS FM2 AMD A55 (Hudson D2) Micro ATX AMD Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813157332
49$ + 5 shipping
CPU:AMD A10-5800K Trinity 3.8GHz (4.2GHz Turbo) Socket FM2 100W Quad-Core Desktop APU (CPU + GPU) with DirectX 11 Graphic AMD Radeon HD 7660D
http://www.newegg.com/Product/Product.aspx?Item=N82E16819113280
130$
Ram:8 gigs Kingston HyperX 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model KHX1600C9D3K2/8GX
http://www.newegg.com/Product/Product.aspx?Item=N82E16820104173
40$ free shipping
320Gig drive gig harddrive
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136591
50$ (I don't understand why these drives are so expensive on newegg atm) The flood is long gone
DVDR
http://www.newegg.com/Product/Product.aspx?Item=N82E16827136247
16$
Case
http://www.newegg.com/Product/Product.aspx?Item=N82E16811233073
20$
PSU
CORSAIR Builder Series CX430 V2 (CMPSU-430CXV2) 430W ATX12V v2.3 80 PLUS BRONZE Certified Active PFC Power Supply
45$
Total of full new computer is: 350$
+ Not sure what taxes are like in your area
+ misc shipping if I didn't miss it
This computer will run skyrim quite well.
If you don't want to build it, print the list, take it to a computer shop and have them build it for you... an equivalent acer costs... too much more.
(I also still suggest you upgrade that old computer to a dual core... it's only like 20 to 30$ to give it new life for all basic tasks and very light gaming