I'd say the method is the same as with any other laptop: pick one specific model, look into its hardware (this[1] and a liveCD may be handy), search for drivers, search "gento" + <specific hardware>, follow the handbook. You have the slight assurance those laptops are built with linux in mind; anything else is just business as usual.
Cheers, Nuno [1] http://www.pcidatabase.com/