How to change file extensions in Windows Mobile?

Ever wondered how to change file extensions on your Windows Mobile phone? One thing is for sure: you cannot use the builtin file explorer program. It does not even show the file extensions let alone change them.

Well. there are two solutions:

• ActiveSync: Connect the device to the PC over ActiveSync and browse to the file and folder of your choice. Right-click on the file name and select Rename to modify the filename or its extension.
• Use third-party freeware tool such as Total Commander. You can do much more than what the builtin file explorer provides. Other than changing file extensions, you can change file attributes (Readonly, Hidden, Archive, System) and file associations as well.