WordPress MU

I've installed wordpress MU, and I had the host set the dns wild card, but when a new user tries to create an account, or in order to get to the directory that wordpress is in, you have to go to the subdomain.domainnname.com/subdomain. And that is what address the new user is presented with as what their address will be, what has caused this and how do I fix it to where it is just subdomain.domainname.com? Any help is greatly appreciated.

TIA,
Brad

Need more details please. Here's a good place to get started:

http://codex.wordpress.org/Debugging_WPMU

I have a feeling though that you installed the software into a subdirectory off of root. As per the readme file, you need to install the files into the root of the domain or subdomain where you;re going to hang sites off of.