Hi there.

I want to allow the user to select any but a couple of items in a listbox. I've got a RegularExpressionValidator for the listbox but I'm somewhat stuck on the regular expression - how do I say NOT string a or b?
"^(a|b)$" is exactly wrong but I don't seem to be able to say NOT "^(a|b)$" ... any clues???

Thanks for your time,
T