Duplicate Add ability to limit signatures

I made a post about this before about how I want my members to upload a signature to my forums but I dont want them to be able to add 5-6 which seems to be an issue at the moment making my page freakishly huge.

Currently the only fix people can do is either limit the size, or block pictures completely, but I dont want this. I want them to have a maximum of lets say 3 text lines or 1 picture per signature.

Hope you understand what I mean!..Love the Xenfor software though as I have just moved over here from VB!