Here's an interesting tutorial...
http://s101.photobucket.com/albums/m47/TMeeks/CB%20Model%20Pro/?action=view&current=CylinderAircraft.flv

And here's another interesting site, linked from the CB Modeler Pro site.. as some sort of official fan site. http://cbmodelprofans.blogspot.com/  I haven't explored everywhere in that link, but it does seem to have tutorials and stuff.