Did I do something wrong? Please HELP!

I could use some serious help! Here is what happened… our blog is changing from one host to another. We are located at http://nes247.com but wanted a new host and domain so we needed to transfer our blog database. We transferred our blog database to the new host successfully as well as the new domain we wanted to use which is http://nesports247.com Also if it matters we are redirecting nes247.com to the new one, nesports247.com Anyways if you visit the new domain the blog is up and running, but not correctly. The links don’t work and it will not let us make a new post.

We obviously use to login at http://www.nes247.com/wp-login.php but now that we have the new domain we will need to login at http://www.nesports247.com/wp-login.php. Here is the problem… When we go to the new login address http://www.nesports247.com/wp-login.php it lets us type in our username and password and logs us in, but it just redirects us to the old login URL and brings us into the admincp of the old one which is http://nes247.com/wp-admin/ From there it won’t let us do much. We can’t preview old posts and when we make a new blog posts it doesn’t show up on the site. So what are we doing wrong? Does it have something to do with the redirect? Did we not install the old database correctly? I am sorry if this is confusing but I do not know much about wordpress. If you need anymore information from me please ask.

Thank you!