First, NO GRAVATARS, FAVATARS or anything like this.
I've used all of them but those plugins dramatically slow down my site. I want to use a system that rely on my server ONLY.
I simply would let people choosing a image from a set I uploaded; this is something very common in japanese guestbook/blog script CGI based.
You can see an example here http://www4.airnet.ne.jp/sash/fantasy/fantasy.cgi
And YES, i searched in this forum before posting ^_^
Thanks in advance!