How to display certain usergroup

[Atsuko]

I posted following question at VB, and recommended to ask at VB.org
http://www.vbulletin.com/forum/showthread.php?t=170508

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I have 2 questions about usergroup.


1. I want to show the members' user names of certain usergroup on
forumhome.
How can I pull out user names?
It is not the memberlist, just user names only.


2. I want to set up a specific post icon for certain usergoup.
So, if a member of this user group send a post, the post icon automatically appeas besides the title in forumdisplay, forumhome.

It is not nessesary now, but if I can set each conditon of forum whether show the icon or not is better.