Migration Question

background, have read the codex and Tamba2 documents on moving a WP install. i am modestly technical (but not deeply WP experienced).

Config. have a working blog http://www.lakewennews.com this was built as a test site for http://www.lakewenatcheeinfo.com.

Hosted at Dreamhost. I have two identical directory tree’s. I would like to keep Lakewennews as a test blog. am willing to create a new DB for it. Would like current DB to go with the production site, the DB is populated, and was named lakewenatcheeinfo.

Currently have lakewenatcheeinfo domain referring to lakewennews.

I cleared the wp_cache. i tweaked the database for the new url. i waited and all i got was a blank page.

Restored the database to point at initial url and all reappeard.

?’s
1: Is there any problem trying to use the DB as is?
2: Do i need to tweak anything to make the new blog aware of the DB? (it is a clone of old blog)

more info:
from the wp_config.php

// ** MySQL settings ** //
define(‘WP_CACHE’, true); //Added by WP-Cache Manager
define(‘DB_NAME’, ‘lakewenatcheeinfo’); // The name of the database
define(‘DB_USER’, ‘****’); // Your MySQL username
define(‘DB_PASSWORD’, ‘****’); // …and password
define(‘DB_HOST’, ‘mysql.lakewennews.com’); // …and the server MySQL is running on

? the host doesn’t talk about the server, but references the test domain, is this the problem?