Create a file extension for theme builder

Question

I am making a theme builder for iPhone/iPod touch. Usually the folders are suffixed with .theme. For my application, could I possible make an file extension, .iTheme, and associate my application with the .iTheme extension?

Answer 1

Certainly. This question's first answer lists the steps for doing so. It's for Delphi instead of C#, but the steps are the same either way.