AutoCad for Mac?

Does anyone know of a good program that works like autocad but on a mac? Most importantly can open an autocad file which was created on autocad on a pc and edit it and save it as a cad file?

There seems to be TONS of software that will fit your needs... A quick google serach resulted in: http://http://www.google.com/search?hl=en&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&hs=Xs6&q=Apple+CAD+software&btnG=Search

Hi jaypaul!

A place where you can find alternatives or what is in the works as CAD/3D software goes is Architosh.