Nightfall in 1 account and Prophecies in an other HELP!

So I have two email accounts and originally (back in 05) I had Prophecies in one email account, and recently when I decided to pick up the game again, I bought nightfall from the online store and accidently had it downloaded to my second email account, is there a way to transfer one over to the other? i tried using the serial key from prophecies onto the nightfall account, but it says its in use. And I have gotten no keys from nightfall.

Contact support via the official website. They may be able to help you. Just be sure to keep the Nightfall account blank with no chars on it until they're able to give you an answer. It may take a day or two for them to get back to you

ah dang it.. and i was looking forward to spend my day off playing GW >.>

oh well, thanks

Contact customer support.

If you've played on both, probably not, but really that's not something that can be answered here.
Go open a ticket with guildwars support
http://www.guildwars.com/support/

afaik what they do (if they help you) is ban the secondary account and add that key to your originial account. Thus, doing anything on your secondary account is relatively pointless as you won't have access to it.

not sure if anything can be done really...

Too many people selling used accounts, and buyers trying to transfer one account purchased on ebay (or elsewhere) to their established accounts.