>I always thought the Primary Key meant one field...the ID you want to make Primary.

Perhaps you were thinking about VFP's primary key? While it's not a VFP requirement that it be only one field, its highly advisable if you plan to use the RI builder for your RI code. If the primary key is composed of multiple fields, the RI builder won't correctly parse out the entire primary key, just the first field will be used - and so you'll either have to edit this RI code (and hope to never need additional edits) or completely roll your own RI code.

I'm writing fast - does this make any sense?