WordPress MU

Okay so when I create a new blog and try to sign into it, it keeps redirecting me to the same login page without login in.

Sounds like there might be an issue with the domain names. Are you using a different domain name to access the Web site than that you gave WPMU during installation?

nope. Same domain...I checked the wp-config file and the current domain is the domain im using.

here is the problem though...when i go to my domain:

http://www.zeitgeist-ny.com/
it works but then when I access the new blog it changes it to non-www url

http://zeitgeist-ny.com/testbloggingfeatures/

then when i try to login nothing happens but it changes the domain to this:

http://zeitgeist-ny.com/testbloggingfeatures/wp-login.php?redirect_to=http://zeitgeist-ny.com/testbloggingfeatures/wp-admin/

Yes, MU will strip out the www. reinstall, don't type in the www when it asks you for the domain name.

if i reinstall is all my users and blogs etc...going to be wiped clean?

Then go fix it in the databse.

how would i fix it in the database? Sorry im a noob.

But I will understand if you explain the process to me.

There are a number of places to manually fix this in the database.

In the following tables, you need to change the "domain" parameter:

wp_site
wp_blogs
wp_X_options, find the option_name = siteurl and change the option_value associated with it.

You can change the database by logging in to your MySQL database with PHPMyAdmin or MySQL GUI Tools.

Thanks ill try that now.

Yes thats what i've been doing but how can I make it so that when ever a new blog is created it is automatically a http://www.domain.com/blog/ ?

I think to change from a subdomain install to a sub-directory install (which is what you are asking how to do), you need to reinstall. That's the only clean way to do it.