At my company we're going to move one division off of Exchange (2010) and into Google Apps. We'll still be in the same building, however, so we need a way to handle reserving meeting rooms. Is there a way to have Google Apps use resource information (both free/busy and actually booking the room) from Exchange?
In Short your cant. :(
Looking thought the Google Documentation, this is one of the features not available. There may be a 3rd Party add-on that Syncs the entries. However I cant see that there is.