It will be vehicle registration details. So will not always be the same length (Private Plates etc...). It will be inputted via a form. I thought I would have a problem with reports searching for a registration if some people used spaces and some didn't but it seems to be working ok???
You could also try this...
Create an event procedure for the on key press event for the text box on your form. Paste in this code (where test1 is the name of your text box)
Private Sub test1_KeyPress(KeyAscii As Integer)
If KeyAscii = 32 Then
Beep
KeyAscii = 0
End If
End Sub