Me too want to know. My system:-

C2D 2.8
PCIE Gt 250 512mb with native HDMI
8Gb system ram ( what os to install to show 8gb? )
Asus P5ND
1tb hdd
Might buy bd-drive later

So will the above be good enough? Planning to out-put HD content to my Panny display via my avr ( to up-scale to 1080p? decode lossy sound ).

Tq very much for all advice.