How to change usergroup titles to images?

[Incubator]

I searched pretty much for this, but i couldn't find what i'm looking for and i'm sure it's something easy because 70% of the forums use it.
I want to change administrator, moderator etc usergroup titles into an image, i don't think this needs any kind of hack:)
Thanks In Advance

[Vaupell]

Do you mean adding the rank to their post bit's ?

AdminCP > user ranks > user rank manager >

Add new rank lets call him admin and add image url to the graphics you have.
select rules for this rank to apply.

If you dont have any graphics you can get some here
https://vborg.vbsupport.ru/forumdisplay.php?f=214

[Dismounted]

The manual also has information on User Ranks: http://www.vbulletin.com/docs/html/main/user_ranks_intro.