Another Question Regarding Conditional User Group

[soyola]

I need a similar solution discussed in this topic but mine is more unqiue http://www.4homepages.de/forum/index.php?topic=6566.0

1. How do I create a conditional user group when logged they can see spefic user's contact information by clicking their user profie?

I would like to prevent regular users from seeing other user's contact information such as their e-mail, IM contacts so they can't spam each other.

Thanks