Put the file on your desktop open DM and you gotta go to load applications check the bix for the file and load it on to your tour then it should be under options then themes
Posted from my CrackBerry at wapforums.crackberry.com
That's if you don't have the .jad file. You should be able download the .jad file directly from your phone. If, after downloading, you still can not find the file, make sure the theme is formatted for your phone (i.e. does this theme work on your specific model phone).