Im building a computer for someone, basically the comp will be for everyday basic stuff.
Computers for everyday basic stuff stopped getting faster about 3 years ago (well, the need for anything faster that is).
If you just want webbrowsing / office / instant messaging / etc, then get a athlon/sempron 2800-3400, or a p4/celery 2.4-3.0GHz.
if you're re-using old AGP vid cards or DDRram, then look at 939, otherwise make it an AM2, especially if you think you might want to chuck in a better CPU/GPU and turn it into a half-decent gaming box in a year or 2...
I think this comp should be plenty fine // overkill for basic everyday applications and use. I dont think I should worry about keeping it up once its all running and I know it all works well together and is stable.
If you could comment on what you meant on be prepared on keeping it up.