This is better to buy pre built: http://www.newegg.com/...6883229437
and installing this power supply: http://www.newegg.com/...6817339020" class='ext_link'>http://www.newegg.com/...6817339020
(have it for my PC at a higher wattage)
its cheaper than the parts. If you go with what that guy posts there are a billion other things you will need that you don't know about, like hard drive mounting screws, thermal paste, sata cables, etc.
if you Really want to build your own there are some general modifications i would do. I will show you in a minute…
-edit- everything i can think of for a computer…
26$ power: http://www.newegg.com/Product/Product.aspx?Item=N82E16817339020
33$ case: http://www.newegg.com/...6811154109
81$ CPU: http://www.newegg.com/...6819113328
70$ RAM: http://www.newegg.com/...6820178333
50$ MOBO: http://www.newegg.com/...6813128652