I tried all the things you suggested but without any joy. I list the terminal output below: Archive: /media/STARS/setup.exe [/media/STARS/setup.exe] End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive. zipinfo: cannot find zipfile directory in one of /media/STARS/setup.exe or /media/STARS/setup.exe.zip, and cannot find /media/STARS/setup.exe.ZIP, period." Then a warning message: "The file '/media/STARS/setup.exe' is not marked as executable. If this was downloaded or copied form an untrusted source, it may be dangerous to run. For more details, read about the executable bit." Then I tried the Terminal input: "mike@mike-laptop:~$ cd ~/Desktop mike@mike-laptop:~/Desktop$ wine Setup.exe wine: cannot find L"C:\\windows\\system32\\Setup.exe" mike@mike-laptop:~/Desktop$ mike@mike-laptop:~/Desktop$ wine start setup.exe fixme:exec:SHELL_execute flags ignored: 0x00000100 wine: cannot find L"C:\\windows\\system32\\setup.exe" Application could not be started, or no application associated with the specified file. ShellExecuteEx failed: File not found mike@mike-laptop:~$ wine start 'D:\setup.exe' fixme:exec:SHELL_execute flags ignored: 0x00000100 mike@mike-laptop:~$ wine start /unix /media/cdrom/ setup.exe fixme:exec:SHELL_execute flags ignored: 0x00000100 Application could not be started, or no application associated with the specified file. ShellExecuteEx failed: Success" I also checked the version of Wine that I am running - it is 1.1.42. I then went to WineHQ website to download version 1.20 but, when I clicked on the Ubuntu vesion I'm using (10.04 LTS), I was warned that the Wine download for this was a Beta version and unreliable and that I might be better off staying with the version that came with my Ubuntu package. There then followed a list of instructions in tecchie-ese that were confusing, so I did not download the 1.20 version. I also tried updating my system with the Update Manager but this didn't pick up any Wine updates. I am now in the same position as when I started and can not install Windows applications via Wine. If there's anyhing further you can do to help (in plain English if possible, please) I'd be very grateful. Regards, Mike