I just bought autosketch 10 because I was told I could edit the mechanical page for architects that use autocad. The problem I have I can't open their files. Do I need to have them save it in a different format?
Save in DXF.
When a company is so protectionist of a file extension, it screws the rest of us http://en.wikipedia.org/wiki/.dwg#Legal_issues
Who remembers the joys of the early .PDFs?
Download and install DWG Trueview 2014, this program has a converting feature that I use when I have difficulty opening DWG's. I do standard convert and open the DWG generated by the conversion.