emails reveal more....
think the emails released by ministers reveal that
1. they were very likely multiple password protected zips
2. the db extract was already done for another internal purpose (in whatever format) so sending a copy of that required no IT cost - hence was the path of least resistance.
Agree with Ray that getting even half a day's IT spend approved is going to involve a mass of bureaucracy.
emails: http://www.bbc.co.uk/blogs/nickrobinson/2007/11/those_emails_in.html