Questions, Pirate. If I don't have the same amount of records or coresponding records in the two tables, I can't use the datarelation, correct? The reason I ask is because I receive an error "This constraint can not be enable as not all values have corresponding parent values. " If this is true then here's my situation see if you can help me. In the datagrid it has seven columns. The first two columns are Serial# and ComputerName . When a user click the cell in these first two columns, I want a drop down list, popup window, or anything that will let the user choose a serial # and computer name from another table. In this way the user don't have to remember all the serial number and computer name of all the computers. At first, I thought of using a popup windows form but I couldn't figure out how to double a datagrid cell. Then I thought of using datarelation but because of above stated problem. What do you think is the best way?

Many thanks for your time and help.

ljCharlie