or couldnt you make a new group, and set it as the Start group
then give them no permissions, and call it say "Pending"
then you can set up a link to only show people in that group on the "Members List" page i think i saw you can show people in a certen group?
if not you could make your own page from it and set it as "WHERE Group_ID = [the new group's ID number here]"
then you can change the status of people to "Newbie" if you want to accept them, or you can delete them
i havent tested this, its just an idea i thought up so i dunno if it will work