You don't have to install Winblows to use WINE, that is the purpose of WINE is to make Winblows programs install and run under Linux without Winblows. It isn't perfect, but it will run many programs. The only time you'd need to buy a license for Winblows is if you'd need to copy a file (such as a DLL file) from Winblows that WINE doesn't include by default. If you don't need to copy any files from Winblows to run your program, no license necessary, no money spent :-D . One way to get around needing to buy a license is if Winblows comes preinstalled on your computer (I notice you're posting from Winblows XP, is that your computer?). If Winblows comes preinstalled, you are obviously paying for the license when you get the computer, which means that you can run the DLL files anyway.