Think I have sorted out the Diplomacy issue by replacing the Casus Belli Game file with the one from the original CivII. I have gone through the events file and deleted all the 'Negotiation' events and all the 'Make Aggression' events. I have left the 'Text' and 'Create Unit' pars of these events. If you see the type of message saying "Denmark declares war on Prussia" this is a historical guide and can be ignored in the game!
I have fixed all the Leaders flags and added a flame graphic to indicate a city without Citywalls!
What level are we playing at?
Here is a list of the starting Wars and Alliances:
Sweden is at war with Poland-Saxony and Allied to Prussia and Holstein
Russia is allied with Prussia
Denmark is allied with Prussia
Poland is allied with Prussia and at war with Sweden and Holstein
Prussia's alliance should be considered as neutrality rather than a military alliance!
I have also added some House rules in post #1