Hi Pimplup,
I noticed your post mentioning that you wanted to transfer you old account. First off, that post should've been made in the Meta section where posts like that are allowed.
http://pokemondb.net/pokebase/meta/
And second off, to answer the question, unfortunately moving posts and the stuff you mentioned isn't possible. However, it is possible to change both your email address and username on your original account. The email is the simplest to change; all you have to do is go onto your profile page, click "edit profile" and scroll down. You'll notice the email field; change the email and save changes. You'll need to confirm your new email of course.
As for your username, changing it is possible, but you may only do it every three months. Basically, how it works is that Pokemaster opens a thread on the Meta section every three months, and allows people to answer stating their current username and what they are going to change it to. Then, a few days later, he unlocks the usernames and allows you to edit your username via your account details page (the same page as the one you used to change your email, add info like your favourite Pokemon, etc.)
The last name changing period was in March, so the next one will be in June. You'll have to stick with your current username until then, sorry :/
If you have any questions, leave me a message on my wall. I'll be happy to talk to you. Thanks :D
