What exactly you want to do?
Update existing customers from Office 2007 SP1 to SP2 or you want new installations to have SP2 included?
For the first one, you can create an update package with the SP2 updates and send them out to all computers that do not have Office 2007 SP2 installed.
For the second, you can use the method described here http://systemmanagement.ro/blog/2009/05/08...configmgr-2007/
Regards,
Vit