I want to create an web application using jsp/servlet which will create themes for different mobile phones. In that application end user can upload jpg/gif images of there choice and select the mobile phone make like Nokia and also the model number like 6030. After that they can create their desired theme by clicking on a button and also can download it.
My main problem is how to convert an image into a mobile phone theme (*.nth or *.sis).
Can anybody give any suggestion on this matter?
Thanks in advance.