First of all, hello to everyone. I think finding a professional video forum was my best bet for getting some answers to my question(s).
Okey-dokey, if I could just please direct your attention to this video for one moment:
I'm basically trying to create this same montage effect. It's a simple way of creating a nice little "multiple character" effect by, I guess, filming two shots with the same background then merging them together.
I'm very experienced with Adobe Premiere Pro 2.0 and although I own After Effects 7.0, I'm a complete and utter amateur with it.
A helping hand/tongue/finger would be much obliged