Signature viewing restrictions?

[thetootall]

Is there a way to restrict who can see people's signatures based on Usergroups? We have had an issue with someone stealing pictures from a member's signature and altering the pictures. I would like to make it to where users in a certain usergroup cannot see signatures until they reach a certain number of posts. I already set up the usergroup, I just need to turn off signature viewing for this group.

Thanks in advance!

[OpticalSerenity]

Bump. I would like to do this too as a lot of our members put personal information in their sig lines, and so I don't want guests to see signatures.

[iran.gs]

for uploading or linking sig this is what we get

Fatal error: Undefined class name 'vb_datamanager_userpic' in /home/eheny/public_html/forum/includes/functions.php on line 99

plz help