I am in process of learning too, so i do alot of searching. Normally what i found out i share to the ones who have same hobby.
Here is your guide for WoW Machinima Tool v3.24
http://www.ownedcore.com/forums/worl...l-v3-24-a.html
http://pxr.dk/wmt/?p=48
http://pxr.dk/wmt/?p=4
http://pxr.dk/wmt/forum/index.php?board=2.0 - download links
Anyway, is you who need to be in depth of it. I use it "light" and i am still playing with it discovering things.
For merging: Photoshop and Automate Photomerge tool.
The macro you ask about ( "/run FlipCameraYaw(45) Screenshot() ) is used to pan the camera and take the screenshot.
Enjoy
@jerara: 3 lined monitors (screens) is your answer most of the time for large panoramic view+ the programs above.

