Guys, while both methods have been used for some years now, they both are somewhat dated and a little superfluous by today's standards. The EasyMultiinstall method was very helpful for creating and consolidating multiple installs into one sim package for situations where hard drive capacity was limited. But with current, inexpensive uber-gig capacity drives on the market, we're no longer forced into such constraints. Not to mention that this method can be somewhat challenging for the CFS2 novice who may not be familiar with the structure or mechanics of the sim's directory. This one gave the newbies fits back in the day.
As for the multiple CD insertion method, its a very time consuming and redundant way to make duplicate copies. The OS can paste a copy much faster than the CD drive can work.
If the user has the drive capacity, the easiest method is to simply make multiple copies of the original virgin install using the conventional Ctrl+C ---> Ctrl+V method and rename them according to theater. After that one can tweak the aircraft and ship types as well as the scenery to reflect the respective theaters.