publish different terms and conditions per domain

using domain access module the legal termas remain the same per domain and this is bad, because any site can easily have it different, for example:
http://www.forniture-alberghiere.net/user/register
http://www.gmsedie.com/user/register
they are using the same db and files, but if I change something in lega, then t change in both sites, instead I need it different.