What is your budget ? $$
What is the resolution of your monitor ? 19" CTR 1600x1200 ? .. ect
CPU ? eg... AMD 4400+ 939 , P4 2.8GHz 478 , Core 2 775 E6600... ect
AGP or PCIE ?
What PSU you have in your system ? eg... 650W OCZ , 500W Antec 2 true blue
What OS you running ? XP32/Vista64