You are on the right track,
There are several diferent versions of IL2, I am flying the 1946 version and that seems to be the most popular. When you create your account you have to select which game you are going to be playing, if you are selecting one that you do not have it will tell you that it can't find the module(you don't have that game). It has been over a year since I installed my game and linked it on Hyperlobby.
I just finished a 2 hour combat session witha buddy of mine online, we usually fly in a server called Skies of Fire, we are online every Thursday and Sunday at 6:00 PM EDT. My game name is 27th_DW. You will need the 1946 version if you want to try and fly with us.
Good Luck!!
Anthony