Use two fields and a script trigger to append the selected text from one field to the other.
Field 1: Format with value list.
FIeld 2: Text field placed below or next to field 1.
Write a script:
Set Field [ YourTable::Field2 ; YourTable::Field2 & " " & YourTable::Field1]
If you set up your value list as a pop up menu, use OnObjectModify to run the above script. If it is a drop down list, use OnObjectExit to run the script.
Thanks! I'll give it a shot.