right now, bf2s.com doesn't offer any personal sigs. We used to, but that feature was turned off a couple of months ago because it put too much load on the server. But since we got a new server this week ( look here
http://forums.bf2s.com/viewtopic.php?id=13826 ), it might just be that bf2s.com personalized sigs are going to come back.
chuy will have to decide wether that is gonna happen though. In the meantime, I recommend
http://www.tehsig.com/ . They offer coustomized sigs in various shapes and forms.