Laim

~Sorry for topic title, didn't know what to call it.~ Basically, What I want to do is have an image uploader that renames the file to the user's username. For example: If Jeff went to upload his image and on his computer it was called '38483_fbkn.PNG' I want it to rename the file too 'Jeff.jpg' I've done this before but I honestly for the life of me can't remember how I did it. Any help? Also sorry if wrong section, I'm new here