casesome

I have and old Pentium D 3.0 Ghz with intel 946gz board lying around in dirt.Wanna Revive it and use it for movies,browsing and download. Things i wanna replace are: 1>CPU 2>MOBO 3>RAM(4gb) 4>PSU(Was thinking of GS 600) Hdd(500 GB) and case(some cheapo case) will be same and would try to sell...