Hi Van.

>> I'm new to Visual Foxpro, so be patient. <<

Welcome!

>> When entering data into the "User_ID" field in the "Computers" table, I want the user to be able to pick from a list of existing records in the "User" table. For the most part I've done this with a ComboListBox. <<

OK, you don't say how you have set up your combo box, but I from what you say, it seems that it should look like this:

RowSourceType = 6-Fields
RowSource = User.User_ID

ColumnCount = 1
BoundColumn = 1

If User_Id is a numeric field, you need to set BoundTo = .T.

ControlSource = Computers.User_ID

Does this help?

Marcia