newbsabott, if you don't like Linux, no worries.. I am an advid convert (only about a year), and I soley use Linux. But I do agree, Windows, on the front end, is easier for the end user. (don't wanna start a war here, just mho... remember I use Linux for everything... it just makes more sense to me, minus the "more stable and reliable" crap people feel everyone..
), but, once you get used to Linux, it's just as easy as windows.
Get familiar with the command line, it's uber powerful.
Go to the directory where you extracted your CAD program and run the binary by ./nameofbin Then post the output here, perhaps it's a dependency problem!