Cannot access site since changing domain name

Im using the latest wordpress

Ive spent a long time on it

I went to admin and changed the wordpress domain to my free domain name thinking it would make life easier and hit save.

It then took me to a login page – i logged in and it keeps throwing me out

When i type the domain name in the web browser it just keeps refreshing in an infinate loop.

Please help as I dont want to re-build the thing! 🙁

http://adamhowlettshow.medianewsonline.com/ < domain name
http://www.adamhowlett.co.nr < free domain