[...told you can fly all the planes like the he-111...]
"Yes" on the He111; "yes" on MOST of the aircraft; but "no" on ALL of the aircraft.
"Regular" EAW has 20 flyable airplanes, 9 non-flyable ones, and the V-1. ECA allows you to fly all of EAW's aircraft EXCEPT for four-engine bombers (the B-17 and the B-24) and the V-1.
This is the list of non-flyable aircraft that are now flyable:
3) Ju87 Stuka
Unfortnately, there is one problem. The now-flyable aircaft listed still cannot be flown in Single Missions or Quick Start Missions---they are only available in Campaigns (Career Mode).
[Are there panels for these or do they use existing ones?]
I'm not clear on exactly what you mean. However, nothing else has to be added to EAW other than ECA---------ECA is an executable file, so when you install it you just double click the .exe file and it will install itself: follow the on-screen instructions. (when you are prompted to install to your EAW directory, if you see something similar to this at the bottom of the Installshield wizard "<<<+++European Air War+++>>>", make sure you select your proper EAW folder in the Explorer-like interface; for most of us that will be in "C: Program Files\Microprose Software\European Air War") Any extra files that are needed are contained in the ECA installation and are added automatically. As far as the 3D shapes and skins go, these aircraft already exist in the sim, so there is nothing you NEED to add, although all of the aircraft in EAW can stand a skin add-on to make them visually more attractive.