Hi there;
We would have been more than happy to help you with this issue. However when I looked up the accounts they appear to have already been linked. So you are already linked and set up correctly. Please note, you're going to use the same account name and password that you use for Guild Wars to sign in to Guild Wars 2. At this point in Guild Wars 2 development, it's not possible to change your account name or email address. However, you should have the ability to change them before launch.
Guild Wars 2 will officially launch on Tuesday, August 28th. Players who pre-purchase Guild Wars 2 will have 3 days of Headstart access beginning on Saturday, August 25th.
You can get all the latest news by watching the main site
http://www.guildwars2.com/ , the blog
http://www.arena.net/blog/ , our Twitter
http://twitter.com/#!/guildwars2 , and our Facebook
https://www.facebook.com/GuildWars2
Thanks,
Guild Wars Support Team
http://support.guildwars2.com/