WARNING: Cheat Engine is probably DETECTABLE by warden. I take no responsibility to any action taken against your account. Use at your OWN Risk.

1. Download Cheat engine (www.cheatengine.org)
2. Load up Cheat Engine
3. Click the computer in the right hand corner of the program.
4. Select the process 'WoW.exe'
5. Click the button that says 'Add address manually'.
6. Enter in the code '8A1F04' into the box that pops up.
7. You will see the address appear at the bottom.
8. Go under the 'Value' tab and change the value to 1.
9. Go back to WoW, and run at a mountain or wall. If you did everything right, you should go right up it.