Building a Wine environment for Windows applications
More and more Windows applications run on Linux thanks to Wine. If you spend a little time on configuration and troubleshooting, you won’t be stuck in Windows – even with applications that no one dreamed would run on Linux.
Beyond the easily replaceable large office and graphics packages, the market bustles with countless, typically smaller programs that cater to the needs of small- to medium-sized niches. Commonly, companies or government offices create their own custom, mission-critical applications. The famous Wine system libraries  provide a means for running Windows applications from within Linux. Right now, version 1.4 is the stable release, and development release 1.5.6 is also available.