I ran across this last night and thought it was a neat resource. http://www.knittingfool.com/
Basically you choose what type of sweater you want and it tells you how to make it.
I also ran into a gauge converter. But apparently I didn't save it. If you find a site that's in the Free Knitting Patterns net ring, choose List all sites. And it's a site called Ellen's something or other way near the end of the list. It tells you how to make your own spreadsheet for converting gauge or you can download an excel format or a quattro pro format.