I documented the parts in the build on the DVD included with my latest book here: viewtopic.php?f=1&t=2630
Starting from that list for a budget build I would eliminate the video card (the video integrated into the processor is perfect for a budget build) and the SSD, and possibly select a less expensive CPU and power supply as well. For a budget build you can use the PSU that comes with the case you choose, saving even more money. The system would also be fully scalable, you could add a video card, SSD, higher performance CPU, etc. later as necessary. Let me know if you have any questions on specific component choices. Scott.