WordPress MU

I installed the Mu-script and created a test user. But in the link i recieved on the mail it's just getting 404 (site not found)

Most I do any sub-domain changes?

What I said here:
http://mu.wordpress.org/forums/topic.php?id=1344&replies=4#post-7242

Yes, but I wonder.

I only have wp-config-sample.php. I dont got a wp-config.php!

Where can I download the verision that it seems everyone got?

I don't know how it installed without creating a wp-config.php, there's something strange about your server! The download page or SVN is where people get their version of WPMU, try today's snapshot, and talk to your admin if you can.

I've a normal version of wp on my server, in that installation i've rename "wp-config-sample.php" to "wp-config.php", then i've entered my wp db details & it was workin' good.
I'm still amateur in wpmu, but i hope it guides you to your goal ;)

/*Sorry about bad English*/