cheap computer recommendations for setup

Does anyone know where I could find a cheap desktop or laptop to run Sonar and cool edit on? I'd like to designate it specifically for my setup. What kinds of specifications and mods. do you recommend for a computer in this case? Im a rookie.

Thanks

www.craigslist.com
www.ebay.com

The link below provides some info on building/creating a music PC.

http://www.tweakheadz.com/tweaking_your ... puter.html

Thanks for the link

Check this out for tweaking your computer for music:

http://www.musicxp.net/

cheap and audio pc don't generally go together