I have to migrate a 25 user site from Exchange 5.5 to Exchange 2007. I understant that I have to first go to Exchange 2003 and then to 2007 - that's clear. However I'm wondering whether it wouldn't be less time consuming to just export all mailboxes to PST, wipe out the Exchange 5.5 server, start fresh with an Exchange 2007 server (on a new box of course) and import all PSTs into the new server. Would this be less time consuming than doing it doulbe swing migration? BTW - I can do this over a weekend so downtime is not a concern.