I really need help, I am working on a website where I have created a HUGE gellery of thumbnail (64 x 64) images that my users will be able to use in their profile so that they appear underneath their names on the board.

What I need to know is how do I go about making a profile image change by clicking on the thumbnail image in the library?

Is it possible for them to fill in their username and password, then click on the image they want / specify its name, then for them to press submit and it changes thei already existing / non existing proile image to the one they have selected?

This is really important and I have spent a lot of time on it so any help would be great!

Just to say that I will be using PHP in order to combine all their info in the form I just need to knwo what command I would need to post to for once they have filled out and submitted the form, so that it actually changes their details!

Avatar hack.