To use your own domain name (e.g.www.yourclub.com) you need to purchase a platinum plan and also purchase your own domain name (try www.register.com).
You will then have to edit what are called the DNS settings of your domain name so that it points to intheteam. The best way to do this is to set the 'CNAME' for your domain to www.intheteam.com.
Some companies do not allow the use of CNAMEs. If this is the case you will have to add an 'A' record and set it's IP address to 220.127.116.11. If you are unsure how to do this contact the company where you purchased your domain name from.
These changes may take a few hours to start working as they have to be updated across the the internet.
Once this has been done, go to your site settings page in your intheteam site and enter your domain name in the appropriate field. Your site will now have its own web address.