Multiple conditional problem

[CrashfAB]

So I have learned alot as of recent on php--but I still hitting a brick wall..

A little background so the code makes sense. My paid subscription usergroup is 21 and my user of the month is 11. The normal subscription usergroup has an image next to there name and when they become a user of the month I want a different image next to there name. Any help would be apreciated as I am sure its a simple deal but one I simply cannot figure out.

PHP Code:

<if condition="$post['usergroupid']==11 and $post['usergroupid']==21"><img src="images/stars/gear-star.gif">
       
</else><if condition="$post['usergroupid'] ==21"><img src="images/stars/red-star.png"></if></if> 


--------------- Added [DATE]1268722979[/DATE] at [TIME]1268722979[/TIME] ---------------

Finally figured it out. For anybody who has this issue here is what I did

PHP Code:

 <if condition="$post['usergroupid'] ==21 & is_member_of($post, 11)"><img src="images/stars/gear-star.gif">
       <else /><if condition="$post['usergroupid'] ==21"><img src="images/stars/red-star.png"></if></if>