make sure the desktop software you have is 4.7 the newest one witch can be found at blackberry.com
certain themes only work on certain OS's my assumption is that you have a old OS and your trying to load new themes
if thats not the case then another issue could be that the files you are using are the wrong format make sure you open up the folder and look threw the files i always save them to my desktop so when i browse for the file its very easy to find
if all else fails update your OS
http://www.blackberryforums.com/gene...ilanguage.html follow the instructions thoroughly
good luck hope your problem gets solved