Speak with Master Mechanic Castpipe in Ironforge.
Master Mechanic Castpipe in Ironforge has need of adventurers! He's organizing bands to reenter Gnomeregan on a data retrieval mission of top security and importance.
Castpipe might not be a member of the Enlightened Assembly of Arcanology, Alchemy and Engineering Sciences like I am, but he's still a smart gnome so if he thinks it's important, then by my calculations there's an eighty-four percent probability that it really is important!
Those are good odds!