game quality pc?

i was just wonder what i should have in a gameing quality pc..... n.n;
just looking for basics.. nothing too techy like a flux capacitor or something they would say in star trek

i would also settle wif the system requirement for playing ffxi on better then minimum possible oO;

Athlon 64 Processors have tested out the best for gameing
At least 512 Ram
Minimum 120 GB Serial ATA Hard drive
GeForce 6600 GT or better graphics
onboard sound is ok
Some sort of hi speed(48x CD or 16x DVD) drive
A decent 450 watt powersupply