How to Use Wordpress to Control Subdomains

1. Open your FTP software and go to your WordPress installation. Right-click 'wp-config.php' on your server and click 'Edit.' This process may be slightly different depending on the FTP software you're using, but you just need to open up the 'wp-config.php' file for editing.
2. Type 'define('WP_ALLOW_MULTISITE', true);' in the line above the comment that says '/* That's all, stop editing! Happy blogging. */.'

3. Go to your WordPress blog and log in. Click 'Administration.' Click 'Tools' and 'Network.'
4. Select 'sub-domains.' Provide the base address for your WordPress network. Add a title to the network, as well as a network email address. Click 'Install.'
5. Go back to your FTP program. Double-click 'wp-content.' Right-click an empty space in this folder and create a new directory named 'blogs.dir.' Open 'wp-config.php' again. Paste the data in the second field above the stop editing comment in this file. Add the data from the second field on this screen to the wp-config.php file. Save the files.
6. Navigate to the base directory of your WordPress installation. Open the '.htaccess' file and paste the information from the third field into this file. Save the file. Log out and back in to your WordPress installation.
7. Click 'Super Admin' and 'Sites.' Enter the subdomain address, name and email. Click 'Add Site' to add the subdomain to your WordPress installation.