Convert .RMVB to watch on NX70V

Interesting, I didn’t know that Image Converter 1.5 (an application for converting video to be watched on Sony Clie PDA NX70V) could handle .rmvb file until yesterday. I read a post in a forum suggesting readers to simply rename an .rmvb file to .avi and then drop it in the IC 1.5 user interface. I tried and I worked. But then I was wondering if IC 1.5 actually takes the file WITHOUT renaming the extension. I’ll definitely try that one out later.