Question : Problem: replace compaq power supply

can't find an unexpensive power supply for my desktop conmpaq presario 5330
part No: 244166-001

Answer : Problem: replace compaq power supply

I assume you have seen the $90 models on ebay?:

http://cgi.ebay.com/NEW-Compaq-EVO-250W-Power-Supply-244166-001-243890-001_W0QQitemZ170212665913QQihZ007QQcategoryZ42019QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
http://cgi.ebay.com/Compaq-p-n-244166-001-EVO-POWER-SUPPLY-250W-243890-001_W0QQitemZ360025452158QQihZ023QQcategoryZ3670QQrdZ1QQssPageNameZWD1VQQcmdZViewItem

And here is an online store with a refurb:

http://www.serversupply.com/products/part_search/products_query.asp?q=244166-001

My guess is you won't find it cheaper than this. Consider upgrading your computer? These should be the specs here:
Pentium 4, 1.5 GHz, 512 MB RAM
You could get a new board, cpu, gig of ram, and the power supply for around 200. 120 for old stuff? or 200 for faster and better! I'll help you shop if you want to go that way, let me know!