Integrating WPMS into outside Script

I have anther script I want to integrate the Multiuser features of WP 3.0.1 into.

When I added this to header file of my other script:
require(DIRECTORY.'wp-blog-header.php');
It shows an Error:

Error establishing database connection

The multi-site system works fine on it’s own, and inside one of the error logs, it shows that WP is looking for just
sitemeta and blogs
instead of
wp_sitemeta and wp_blogs
in the database.

Here’s some of the error file. This might really help us out in integrating 3.0.1 with outside scripts if we can find the solution:

[23-Nov-2010 19:53:34] WordPress database error Table 'wptable.blogs'
[23-Nov-2010 19:53:34] WordPress database error Table 'wptable.sitemeta'
[23-Nov-2010 19:53:34] WordPress database error Table 'wptable.sitemeta'