Thanks for the quick replies, Robert and Adger.
My reason for asking was I bought a cheap copy of CFS3 off of ebay, and it only came with the 2 disks. I sent the seller a msg, regarding the key code, but had not heard back yet.
It's good to know I don't need it, and glad I am also 'legally and morally' a CFS3 owner, now.
I didn't see any section to do a intro. I'm almost totally new to flight sims (only experience was with Red Baron, many years ago). Not a avid flight interest person, more into modelling, and pretty specifically focused with that. WWI RNAS is my primary interest, with a bit of WWII English Channel Ops added in.
I have RoF, though have not had time to do much with it, as of yet, but I liked what I read about WOFF, the 'career path', in particular.
Again, many thanks.