Ignore above, I re-downloaded the files and I think I had a Sprint Evo 3D version in the first place. Tried the VM version and SUCCESS!
Where do I go from here? What is 4EXT from the guide and do I need it?
4ext is just another recovery. You should try it... It's a really nice recovery! Not required though. So you are successfully s-off?
Where do you want to go from here? You can flash any rom, (some will require an hboot change which you can now do), you can flash files through the bootloader.
I can teach you how to do that now that you are s-off. Lets start by flashing 4ext recovery through the bootloader.
Download this file. https://dl.dropbox.com/u/100923173/4ext_PG86IMG.zip
Rename to PG86IMG.zip and put it on the root of your sd card. (Not in any folders)
Reboot into your bootloader. When asked to update, say yes with volume up. When finished press power button when prompted.
Never leave PG86IMG files on your sd card. as soon as your phone boots back up, delete or rename the file. It's presence will prevent you from entering recovery in an emergency.
Now check out your new touch screen recovery and flash whatever rom you want.