Ok well im going yo either make or upgrade a computer to a "simple gaming computer." 
ok first if im upgrading the computer its going to have
-ASUS M2V-MX motherboard
-2GB Kingston DDR2 667 ram
-Nvidia 7800 GTX
-Athlon™ 64x2
(extras)
- Logitech G15 keyboard
- Logitech Z-2300 Speakers
- Samsung SyncMaster 2063uw Moniter
My first question is with all this, how large of a power supply am I going to need?
My secound question is if you wer going to make a computer (just the insides not the case and moniter etc.) and you had a budget o0f ~$600.00 CAN give or take fifty or so dollars what would you recomend me getting?
P.S.- sorry for spelling/grammer mistakes as english isnt my first language
ok first if im upgrading the computer its going to have
-ASUS M2V-MX motherboard
-2GB Kingston DDR2 667 ram
-Nvidia 7800 GTX
-Athlon™ 64x2
(extras)
- Logitech G15 keyboard
- Logitech Z-2300 Speakers
- Samsung SyncMaster 2063uw Moniter
My first question is with all this, how large of a power supply am I going to need?
My secound question is if you wer going to make a computer (just the insides not the case and moniter etc.) and you had a budget o0f ~$600.00 CAN give or take fifty or so dollars what would you recomend me getting?
P.S.- sorry for spelling/grammer mistakes as english isnt my first language