Which version of CFS?

[jumpjack]

How can I determine which veriosn of CFS I have? It's box states "Combat Flight Simulator - WWII Europe Series". Is it 1,2 or 3? Is there any upgrade available?

I am also interested on tech specs about various CFS versions: which is the maximum texture detail supported? Can I add satellite photos to the available scenarios? In which way?

[greycap.raf]

It's Combat Flight Simulator. No number (well, 1 if you like), the original.

The only way to upgrade is to buy CFS2 or CFS3, you can't change the original into a later version.

I leave the texture question to those who know more about modding the scenery. :)