Sorry, I left out a minor detail. Bill also had to modify the .vbs file. Turns out there seems to be a rights issue. So, he changed the (".MailboxSize.txt", True) to ("C:tempMailboxSize.txt", 2, True). This seems to get it to work.
I'll check and see if it really worked for me or not....
also, I am not an exchange guru, but is ther not a section on the exchange server where you can get most of this data emailed to you already...? I showed this script to a guy just the other day, and the very first thing he said was, "Hey, you know Exchange server has that built into it right?" I am not an exchange expert... so I reserve comment to someone who knows what they are talking about.