Why not just connect the projector and set your computer to extended screen, then you can automatically position forms at the extended position, if you like you can even make an option group on a main form for extended or normal and when a form is opened automatically go to the correct screen.
If Forms![Scan Data]!Frame54 = 1 Then
DoCmd.MoveSize 2500, 1000
ElseIf Forms![Scan Data]!Frame54 = 2 Then
DoCmd.MoveSize 24000, 1000