connecting to a different database

I’ve got a bunch of word press blogs on the server from which I rent space. One site had a pretty bad script crash. I’d like to reconfigure my wp.config.php file for anther blog so that it connects to the database of the crashed one.

How do I do this? I disabled the wp.config file for the crashed blog and put in the data in the new blog’s config file. But the result was that I got some kind of domain error when I opened up the new blog.

How do I do this right?

thanks for any help