This is what I did. I went to slingbox.com. Up in the top right corner is a Log in link, click it. Make an account (if you don't already have one, I had one from posting on their forums wondering when the 922 would be supported by the Windows/OS X software).
Once you've made an account and are logged into it, go back to slingbox.com, where there was a Log in link you should have your email address up there. Click on your email address.
This will take you into your profile. Along the left side there is a set of buttons, click on the one labeled SlingBox Directory.
Now click on the Add A SlingBox button.
You'll get a popup asking for some information. SlingBox ID can be found on your 922 by pressing the menu button twice on the remote. It will be labeled Sling Finder ID on the System Info screen that comes up.
The name for the SlingBox can be whatever you want.
The password will be "admin" (don't include the quotes). (Yes the 922's password is fixed to admin and can't be changed, it's dumb but it's true). Ignore the Sling Password in the System Information screen, it's not needed.
Check the Login as Administrator box.
Click Save.
Go to your Android device and log into the account you've made on the sling site. When it tries to connect to your 922 it'll ask for the password for it again, enter "admin" and you should be in.