domain mapping crashed

I am a beginner for using wordpress. I was trying to do domain mapping i.e. moving my blog from myname.com/wordpress to myname.com. So I followed Giving_WordPress_Its_Own_Directory. I was at the General panel, and as I was half asleep I accidentally typed myname.com for both boxes for WordPress address and Blog address!! Now I am unable to get into the admin panel 🙁

Is there anyway to solve the problem? I have just finished my site and don’t want to start all over again as I need it done urgently. Please help!!!!! Thanks!