moving account

hi, i've got factions and nightfall, and now i was wondering, i've got 2 email accounts one on hotmail and the other yahoo. i was wondering if it was possible to move either factions or nightfall to my other email address since both of them are on my hotmail one, if not its fine but ya still wonderin if it can be done at all

I believe you can change the email address you use to login to the game, however, if you've already used that address for an account and you didn't merge nightfall with factions when you installed it, then you're probably out of luck as Guildwars will say the email is already in use.

ArenaNet will do a one-time account combination if you mistakenly registered the chapters separately (upon proof that you were the original owner of both chapters).

You cannot split the two chapters to separate accounts after registering them. You cannot change your email log-in. All you can do is change your contact email.