How-to Create an Account for Ballstreams.com
1. Go to http://www.ballstreams.com/ref/3749
2. Hit Create an Account on the top right corner.
3. Click on the Request an Invite
4. An invitation should be sent to your email address within 48 hours.
5. After the email has been sent, follow the directions to create an account.
UPDATE: Ballstreams registration is currently closed. If you are looking for a NBA streaming service, try Reborn4HDLive. They offer a free trial so you can test it out before you subscribe.
For Reborn4HDLive review, read here.