Ausatco
That's actually a very percipient post. As it so happens, I do use an MS Intellimouse, but have checked and the Clicksaver option isn't checked. Also, can't remember seeing a registry entry change for the intellimouse when I looked at the script.
I still rather think that for some reason, Visual Basic Scripts execute as soon as you single click them. As I think I've said before, that could simply be one of the "unpublished features" for which Windoze is renowned!
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Feline
(I Sit, I Watch, I Smile)