Well, your best free option is probably PCBartist (
click to download, free, unlimited license) which allows you to lay out your PC board, then either save your gerber files or submit directly to AdvancedCircuits... one of the many quick-turn boardhouses in the US now.
If you want another option for a board manufacturer, we've also had fantastic success with PCBexpress.
Questions? Post. Hope that helps.
-q