OL2000, Exch 5.5 sr4, win95 os

I am trying to set a resource mailbox to automatically decline meeting requests if the timespan of the meeting does not have a 1-hour cushion on either side of the meeting. For example, if someone wanted to reserve ConfRoomA from 1-6, and used our form to request that room, I need ConfRoomA to ensure that it is 'free' from 12-7, to allow for prepping and taking down the room. As a side note, we would like to accomplish this on a resource-by-resource basis (i.e., at the mailbox level) rather than through the code on our custom form, if possible.

Any thoughts would be appreciated, and I can provide more details if necessary.

Thanks in advance...