I am trying to search for a friend that i know he is on curse too, but ive no idea how to search thru members and find his profiles, so i can add him to the friends list . . .

Tuche, we will be working on my.curse.com in the next few weeks for search features, sorry about that we didn't have time to finish it before the 3.0 patch.

You can search for friends with http://www.curse.com/user/Members.aspx. The link will be appearing on your my.curse.com page shortly.