Bandy :)
For what I know (and it's not too much) DCG/DCE should influence the campaign basing on the results of the mission. For example, if, in a mission, I destroy all the ground defense of an airfield, in the successive mission they shouldn't appear. There was something like that applied to a WW1 simulator in Flying Corps (AFAIR). So far I tested DCG only in IL2 shturmovik and It gives a great enhancement to the game. In synthesis there are no more pregiven mission that doesn't influence the campaign progress, but the pilot can give is "imprint" to the trend of the campaign.
The only thing that doesn't make DCE work is that the exe at the start ask you for the SF1 exe only: I think that to modify that we should ask to lowengrin directly..