I've had a quick look at that site I linked to you Blacksix (I had originally only done a search for the original Il2 coverart) .. it looks like all the covers for the entire IL2 series are on there (including German versions), so you should be able to find everything you need in the one location.
here is the search page for the Letter "i" .. you can see lots of versions of IL2 coverart is listed
http://www.cdcovers.cc/list/pc/i
cheers