Thanks for that, that's very helpful. I've found the ActiveX controls (I
didn't know about their existence before!) and I think it's actually the
'Option Button' that I want. I've managed to create a button however I'm not
sure how I can edit the 'Properties' so that it turns 'on' when I click on it
and 'off' when I click on it again. I'm not very good with all the computer
speak in the long list of 'Properties'. Any ideas?