I begin the process of making printed circuit boards (PCBs) by using a programm called Ares Lite. The file is printed as a copper mask and transferred to a presensitized sheet of copper clad. The copper clad is manufactured by a company named DALPro and they're based in St. Louis. This weekend I'll get a chance to pay them a visit and I'll post my impressions.
The product is great, I encourage everyone to try it out.