Alowing free-form user input... You must have better users than I. Mine have trouble finding the "any" key.

Better I think, to take a peek in the reg to see if prog installed and then toss up a MessageBox with a simple Yes/No. I cxan't imagine you'd want to do more than one install per logon anyway. Even if you wanted to you could call them serially.

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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.