I used Andy's formula's to create a spreadsheet that also generates random numbers within the sampling size. If you PM me with your e-mail address, I'd be happy to send it to you.
The only problem is: I haven't found a way to cause it to generate "unique" random numbers. As it stands now, after a number is generated, I manually enter that number and use "F9" to regenerate, if the number is repeated anywhere in the sequence. If you figure out a way to remedy that, I'd appreciate you sharing it.
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"Remember no man is a failure who has friends." - Clarence (the Angel) Oddbody - It's a Wonderful Life