BY no means am I a professional but I am pretty certain that all you need to do is to rename the fs9.exe file and then you should be able to install it again in another folder. The only thing you have to be carefull of is the short cuts for both copies so you know which short cut goes to which copy. 8-)
That is correct....just rename the fs9.exe. I also created custom icons for each version
so my shortcuts are easy to ID as to which version is involved.
I have four installs of FS9 on my system. The original fs9.exe, fs9_clean.exe,
fs9_USA.exe and fs9_Europe.exe.
My original install got so bloated with addons that I decided to create a "clean" install
for testing. Then I decided to cretae installs for the two areas I fly the most with
plane sets and AI tailored to those areas. Each install is on a different partition
and/or harddrive.
Taking it a step further, I created common Addon Scenery, Scenery and fsfsconv folders
on yet another partition. All four installs share those common folders and have their own
scenery.cfg files, etc.
As to the registry entry, I seldom worry about it as I always install addons to a TEMP
directory and then move the files to whichever version(s) I want them in.
There is at least one little utility that will allow you to modify the registry entry for FS9
at will should you find it necessary.
Paul