hi all i got 400 to spend on my old pc any suggestions are more than welcome 
my old pc spec:
motherboard msi p6n 680 (foulty one) thinking off asus blitz formula but dunno if is any problems with it
cpu old p4 505 2.66 dunno quad or c2d
gpu sparkle 7800gt 256mb 400/1000
ram 2X1G ocz 8500 sliready
case antec 900
some optical drive sony
psu enermax 600w (noisetaker?)
17in lcd monitor
g7 logitech media keyboard

my old pc spec:
motherboard msi p6n 680 (foulty one) thinking off asus blitz formula but dunno if is any problems with it
cpu old p4 505 2.66 dunno quad or c2d
gpu sparkle 7800gt 256mb 400/1000
ram 2X1G ocz 8500 sliready
case antec 900
some optical drive sony
psu enermax 600w (noisetaker?)
17in lcd monitor
g7 logitech media keyboard