I recently built a custom home productivity PC for a client. The PC was built for web browsing, Microsoft Office, and watching DVDs. The operating system (OS) is Microsoft Windows 7 Home Premium 64-bit. Here are the components, with links to Newegg.
This build was inspired by Hardware-Revolution.com: $400 Gaming PC: Now with even more bang for your buck!
Wow great computer, well done but how long did it cost and to build ?
It was just over $600 total, including parts, assembly, and installation. The entire process, from selecting and ordering parts to installing the finished PC, probably took 2-3 weeks, but the client was in no hurry.