Hassat_Hunter, you don'T happen to own the steam-version?
If you have the AddOn installed, you only need the AddOn DVD for ED. Here, it won't start without that so if you have not the steam-version I do not know what version you might have (unless you threw a NoCD on it or have it pirated ;)).
Does DKS come without Copy Protection? I play Retail ED + Retail AddOn.
