changed blog url – no access now

Hello,

After installing I stupidly messed around and changed the blog url in my general setting page. Now I can’t access the blog properly.

How would I change it back? (Would it editing a php file or going into mysql, and which file or table?)

thanks

EDIT: Ah sorry, I think I found the solution here
http://codex.wordpress.org/Changing_The_Site_URL