I think you are trying to describe cascading combo boxes...
If you are have a read here http://www.baldyweb.com/CascadingCombo.htm where there is a demo you can download.
That's exactly it!!! Thanks so much
Which it was it?
Trying the cascading combo box.....We'll see
Ha ha - Victory is mine
Muhhhahahhha /Dr Evil/
Curses!