I just don't see the point...
If you're really looking for a cheap computer to email/surf/word process, look around your city for an electronic recycling center or used computer store. I just purchased 2 dozen computers for my new practice.. they're nothing fantastic, everyday HP boxes that were probably $1200ish new:
P4 2.5 Ghz
512 Megs RAM
Keyboard/Mouse
Onboard video.. 32 or 64 megs
They cost me $112 each before taxes and 15" CRT monitors for them cost $35 each. Each machine is a universal donor to all of the other machines... I have 6 extra towers to swap parts if necessary.
Even look on Craigslist... I seriously don't understand why you would build something that bad, new, when you can get a netbook or cheap Dell for $500, which includes a new monitor.
10 weeks is a long time to find a good, used, local computer on your local online classifieds. The college year is winding up... put up a poster on the local campus? lol There are so many BETTER options out there. Heck, I'll give you my current machine for $300 and it costs me $2200 to build only two years ago! lol