The first step to software localization is to scan your source files using Sisulizer. It will find all strings in your resources that need to be translated. This tutorial shows you how to scan a .NET project.
Click the pause button if you want to stop the tutorial. Click it again to continue the presentation. You can click anywhere in the time bar to jump to some other position in the movie.
Download a fully functional 30-day version of Sisulizer and try it with your application, and go for international markets with a multi-language version of your software.