The DKS patch can be downloaded
here.
The D2:ED patches are listed at the bottom of the support page, but fixing the missing DKS patches will have to wait until a full time web designer is hired.
Once you have that installed, download and extract the
DRM free executable into the bin folder in the main install folder, overwriting the original (or rename it first, if you wish, but there is not much reason to keep the DRM version).