More Guts: Wine will fail with a fair number of programs; because it's missing DLLs. DLLs can either be: native or builtin native is copied from a windows installation builtin is supplied by Wine. some DLLs require one, and some the other. Requires experimentation to figure out which. from the command-line, can find out what DLLs your program needs: wine --debugmsg +loaddll program.exe lots of debugging information: /wine --debugmsg +loaddll program.exe