CPU upgrade advice

[Overkill]

Hi all

I wanna upgrade my CPU. My motherboard is an Asus motherboard, model number (N13219). Right now the current CPU is a 1.8 GHZ Semprom. I'm building my comp up slowly. I have 2 GIGS of ram and a 200 GIG HD. I just bought today a Sapphire Radeon 5770 Vapor X graphics card. I bought a few weeks ago, a mid size Antec case with an Antec 650 watt power supply. I'm looking to upgrade my CPU "now" considering when I have the money, all these parts will work on a new motherboard. just dont have the money for a new motherboard yet. I could really use some suggestions on which CPU to buy. I browsed the net and if I'm not mistaken, an AMD athlon 5200 will work, but I just want to be sure.


P.S. I'm building while still being able to use the comp. thats why I'm asking what will work on this motherboard.

Thnx in Advance,
Chris