Need help for upgrading

I built my computer about 8 months ago and I am looking to do a bit of upgrading and I can not quite put my finger on what to upgrade first taking into account case cooling as well. I am looking for improved system performance and My 3dmark06 score was roughly 11170 (lost my paper) with both my graphics overclocked and My cpu overclocked.

system specs...On a 32 bit xp pro operating sys

2x3850's HIS iceq3 turbo
AMD atha 64x2 5k+ BE
2 gigs of g.skill 800 action
msi k9a2 mobo
iceberg 680 psu apev
crappy 7200 ribbon hdd bout 100 gig and a slave 60 ide ribb


I may have missed something but I do not think so, basicly I build a pretty decent 790fx ati spider platform thinking in time I would be rocken the quad fire but then the graphics cards kept flying out and even the newer ones are cheaper than the friggin new ones so no quadfire today. Just looking on ideas what to upgrade for better performance and stuff yaa lol ;P budgest is a rough 200-250 us currency.

There is the Phenom X2 550 BE, excellent dual core for just $100, then the Phenom X3 720 BE, my favorite since its three cores, for just $140. Then there is the Phenom X4 940 BE, at just $190, and a step up further than that is the Phenom 955 BE at $250. All the best choice for the money.
Check that your motherboard supports the processor you want.

Best Graphics Cards For The Money: June '09

http://www.tomshardware.com/review [...] 323-6.html