Thanks for posting in the answers forums! That's a great question. You can reset your password by going to account.sling.com. After you get to the web site, if you are not logged in, it will give you the option "forgot password? Reset."
If you are logged in, you will need to log out and then go back to accounts.sling.com and it will give you the option to reset the password.
Hope this helps!
The Sling Moderation Team