3
You need the path to groups though, which you can't access easily without system admin
log in as admin, and then type this in your browser
http://www.yoursite.com/modules/system/admin.php?fct=groups
Then go to webmasters group and give yourself system admin rights by putting a checkmark in the boxes. This sometimes happens by clicking "update" in the webmasters group--without checkmarks in the system admin boxes