I'm trying my hand at creating the rocket-propelled missle warthog/bobsled. First step was to import the model and its respective bitmaps.

I have a model with two modifiers: editable mesh and "envelope". What I would like to know is what is "envelope" and do I need it for a working model and animations?

P.S. all I did during import was to uncheck the "attach parts of mesh within region" flag. I'm assuming I was supposed to do that...and that is all I needed to do?

Thank you to all who contribute their time, knowledge, and experience to this topic :)