you can edit a member's profile by going to members.asp and clicking on the

on the right side of the table in the row of the member's name. Or, you can view a member's profile by clicking on one of the profile links in a post made by that member, and when you're logged in as admin, you can click the member's name on the top-left of the table.
You can only delete members by going to members.asp and clicking the

on the right side of the table, in the row of the member's name. Remember that if a member has made posts and is then deleted, all his/her posts will get
N/A as the author's name. In those cases it might be more interesting to permanently lock a member.<