At last, after a long period of searching, I found my EUII CD! Overjoyed, I promptly inserted it into my computer's CD drive, and went to install. The installation got up to 86%, to some music file of some sort, then it stopped, saying that there was an error. Now I have the EUII AI, Config, Db, Gfx, Map, and most of the Music files, but nothing else, and so cannot play my glorious EUII. I haven't been able to find another copy of the game anywhere at all. 
Is there any way to rectify this? All I need are the Sfx and the Scenario files, as well as a few other files like the dlls and the cfgs and the exes.
Is there any way to rectify this? All I need are the Sfx and the Scenario files, as well as a few other files like the dlls and the cfgs and the exes.