I'm very excited to announce that today we have done two things I've been wanting to do for a long time:
#1: With Exchange 2000 SP3 and the latest post-SP3 hotfix rollup (as well as with Exchange 2003 SP1) and a custom tool that one of the Exchange developers put together, it is possible to have custom quota generation messages (i.e. you can change the canned message that tells users to move items to a PST, etc).
#2: We've released the source to the tool on gotdotnet.com.
Please carefully review the shared source license for this tool, I promise it's not too legales-y. You can modify the source, redistribute it, etc... you just can't charge for it. Join the workspace on gotdotnet and check it out, or download the bits.