Joseph,
And we had decided that we wanted to screen members that are coming into
our group, but not postings.
Simple. As J has mentioned both controls are in the group's Settings page, under the Admin drop-down in the left hand column.
In the first section (General) leave empty (or uncheck) the box next to Moderated. This establishes a group policy which allows members to post freely, except those members who may have a moderation override set in their subscription. Ask if you have questions about new-member moderation or other aspects of the individual member subscription controls.
Also in the first section, just below Moderated, put a checkmark on Restricted. That will cause memberships to be held in the Pending list until you approved them.
I tried explaining to Mark what I wanted, but he has not gotten back to me.
He's trying to stay focused on bug fixes and feature development, so he prefers to let us users help each other out where practical.
Shal