Had a similar problem with a program for my son's school - they had an old laptop running Vista on 512Mb of ram (don't get me started) Linux was the logical answer, and the only program I couldn't substitute was the school management software STMS. Initially Wine was no help. After a good bit of research I found the OCX and DLL's that weren't registering depended on some other DLL's, namely Microsoft Foundation Classes 4.0 and 4.2. Easiest way I know how to explain how to figure out what is missing is to follow these instructions: * open the "Browse C: Drive" option on your Linux (or whatever Mac OS equivalent) menu and drag all the installation to a folder on C: * from a terminal window enter "wine cmd" * 'CD' to the installation folder and type whatever command starts the installation - Usually "setup" * the install will pop up in the GUI, but a stream of messages will appear in the terminal. Some are critical, some aren't (these usually say 'fixme') You're looking for something like: err:module:import_dll Library MFC40.DLL (which is needed by L"C:\\windows\\system32\\Pdqcom32.ocx") not found * in the above case (assuming you already have winetricks installed) finish the install and type 'exit' to get back to the native terminal - not C:> - and type "sh winetricks mfc40" Some OS's may omit the "sh" depending on how winetricks was installed.