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!