94
Hmmm...
Odd.
Does your URL resemble this or something completely different:
http://YOUR-SITE/modules/system/admin.php?fct=findusers ?
I know, not much help, but I don't know where else to start.
As for giving one of your users the rang "moderator" go to
edit user and change his rank there. Note that rank does nothing but looking pretty.
If you want to change his persmissions, go to
groups. At least that should get you moving for now, until the other problem is sorted out.