The problem is that your domain isn't pointing at your hosting account. A current lookup shows that the nameservers are set to NS#.WORDPRESS.COM rather than Go Daddy's nameservers. Also, when you go to the /wp-admin/ page, you can see that the URL is redirected to the original wordpress.com blog you have with them.
So, getting this setup the way you want should be fairly simple. All you need to do is set your domain to use Go Daddy nameservers. Here's a guide to step you through the process - http://x.co/ic7X
When you have to select what to do with the nameservers, select the "I have a hosting account with these domains" option. Once that's done, you just need to wait a short while for this new information to propagate (usually only a few minutes, but it could be a few hours).
When you can visit your site and see that the /wp-admin/ page does NOT redirect to the wordpress.com version, you know it's done and that you're seeing the site hosted at Go Daddy rather than at WordPress. You could also run a simple ping to see what IP address the domain resolves to - it should resolve to the IP address of your hosting account rather than one of WordPress' IP addresses.
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