I have been able to build phoenix from a windows 98 box to a very nice black cased Mint linux system im still using the CD rom drive from the windows 98 system, but have mange to switch all other parts for new versions as it sits now it would have been a power house in 2007 so still  not top of the line but it is running 64bit windows 7 with 4gb ram on a sata 500 gb hard drive i saved from being tossed out at work. and mint linux on a IDE 160gb that i also saved from my office. the keyboard, and mouse i picked up for about 4$ and the monitor (not pictured) is a 15in old dell that i found at a local good will. so it has not been totally free but i have spent less then 30$ on this whole project.