Not really. Best you can do is create a notification that will show on every page (same criteria as Notices) and allow it to be dismissible. The wording would have to say "By dismissing this notice you agree blah...". Or you could change the Dismiss Notification phrase to some other appropriate text.
Ok thanks, we need something more explicit that we can record to the database though (Like a digital signature / time and date capture)
Nevermind, have it as a suggestion