I was wondering how would i make a image like
http://www.fpstactics.com/sig/custom/killa/1912428.jpg
I know this is coded with PHP
But how would i make this, i think all the codes are pulled from
http://clan.subagames.com/charstat_cf.aspx?usn=1912999
But witch codes?

Also how would i make a engine which would allow my users to make there own by inserting there USN? (number at the end of the link)
Kind of like
http://www.fpstactics.com/gaming_signatures.php

Thanks in advance
NOTE: I have host monster