Guild Wars | Is there a way of using the same access key and using it on 2 of the games?

I want to add my access key to my guild wars 1 and 2 games but it wont let me load prophecies it just loads factions? what do i do?Guild Wars | Is there a way of using the same access key and using it on 2 of the games?
No, each game has it's own access key.