Thanks for the response. I hit craiglist pretty hard and have narrowed it down I think.
http://seattle.craigslist.org/see/sys/4294368394.html
http://seattle.craigslist.org/see/sys/4266042369.html
They are both being sold by the same guy. I was hoping to get some feedback. One is way cheaper than the other and I want to make sure it's worth it to buy the more expensive one or not. And also I want to make sure this spec will at least let me play guild wars without any FPS issues at mid-low graphics settings