Update: I found the answer to this in the wiki. GV 2.2. They have a 64 bit version to which I gather would be used for MC.net as well as the regular 64 bit MC.
MC 8.0 use to come with the GV 2.2 DLL. I am running MC 10.0 now. Does it still come with the GV 2.2 DLL or it is GV 2.3.
Is GV 2.3 the same but used for 64 bit?