i wouldnt waste your money on anything above a AMD XP Barton 2500+ since you can just EASILY overclock it to 3200 speeds.
same core, lower price, same speeds.
Do this with a ABIT Nf7-s, and you are one set mother f'er
(note a decent heatsink would be great - 30-40$ max)
Abit NF7-S motherboard (103$) (Best Nforce2 mobo & best oc'er atm as long as you get reversion 2.x)
AMD XP 2500+ Barton (90$)
(i know this is beyond your limit, but for future reference) 512Mb Corsair XMS Low Latency 400mhz DDR (140$)
Vantec Aeroflow Heatsink & Fan (25$)
Default CPU@ 166x11 = 1830mhz
CPU@ 220x10 = 2200mhz @ 42c Idle / 49c Max Possible Load
RAM@ 7-2-3-2 440mhz