WordPress MU

Hi.

I'm the webmaster of a WP blog. It's not hosted by WP, it's hosted by BounceWeb.

I have a lot of categories and it's becoming a problem. So I'd like to create sub domains in order to split my blog and make it easier to browse.
I'd like to use the same theme for all my sub domains, but i need the categories to be different from one subdomains to an other.

Someone recommanded me to use WordPress MU.
It's downloaded, unzipped and I copied the whole folder to /public_html.

I renamed the WordPress MU folder to WPMU.

If I go to http:// domain.com/wpmu i got this:

Index of /wpmu

* Parent Directory
* wordpress-mu/

Apache/2.2.11 (Unix) mod_ssl/2.2.11 OpenSSL/0.9.7a mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 PHP/5.2.6 Server at domain.com Port 80

If I go to http:// domain.com/wpmu/index.php i got the not found error message.

And if i try to open the index.php file from the directory it opens unlimited empty firefox pages with no name.

I got this in the Read Me file:

"4. Make sure your install directory and the wp-contents directory are writeable by the webserver."

So how do I do that ?
Any suggestion is welcome. :)

Thanks.

simply just move all the content of /public_html/wpmu/wordpress-mu/ to /public_html/wpmu/

Thanks for your answer.

Now when I go there http:// domain.com/wmpu/ I got this:

Fatal error: Call to undefined function wp() in /home/indexcom/public_html/wpmu/wp-blog-header.php on line 20

delete everything in domain.com/wmpu/ and upload files there once again.

I deleted and uploaded everything again and now when i go to http:// domain.com/wpmu i got this:

"There doesn't seem to be a wp-config.php file. I need this before we can get started.

Create a Configuration File"

When i click on the create a configuration file button, nothing happens.