Ordering Memberlist by Usergroup Image URL

[alternity]

I'm the webmaster for a gaming clan that's website is using vb. One of the big aspects for gaming clans is the roster of members.

I've been able to get the member list to only show clan members. This is done via usergroup for all the ranks in the clan, and I've modified the page slightly to show usergroup images. You can see the member list page here - http://www.the-legion.net/memberlist.php.

I want the member list to be by default ordered by the rankings though, and not by name. Unfortunately the group id's of the usergroups are all mixed up due to the fact that ranks were added later and such. So my idea is that because each of the usergroup images is ranked 00.gif through 20.gif is it possible to make the page list by the url? Or if not, is there another way to order it by usergroup? If necessary I can change the usergroup id's and just mass move people's usergroups.

I apologize if my question is unclear, and I'm happy to clarify something. Thank you for your time.