Thanks for looking at this problem, but you haven't seen the whole picture. What I was hoping to do was add a new student AND then run the append query from one command. Your copy doesn't append the student, at least the append part didn't work.
Thats ok though, as I mentioned earlier my latest version of this achieves this through two steps, one adding new student from dropdown, then selecting Enroll runs event to open next form with command to run query.
I really appreciate your efforts, I'm sorry I didn't make my problem a little clearer for you to understand.
Cheers
Tanya