Thank you so much b1gapl, vernong1992, nagasama!!!!! really appreciate the help you gave!
Well it is built, currently installing win xp pro. Don't think I want vista. My secodn PC built first time successful just like my first as shown in my sig.
This new build is:
Antec 900 gaming case
A core 2 duo E6420 CPU
The Tuniq Tower 120 heat sink and fan
2GB(2x1) CORSAIR C4 DDR2 800 RAM
512MB geforce 7900GTX graphics card(taken from my old PC)
Soundblaster x-fi fatal1ty platinum sound card (taken from my old PC)
1 400GB seagate HDD
1 120GB WD HDD (taken form my old PC)
a couple of CD drives
620W Corsair PSU
It is currently not in its room yet lol, still in the conservatory due to the nice cool worspace there.
here are a few of pics :