Exactly what modding is possible?

[Jinix the Elder]

I am used to 'modding' with the TESCS editors for Oblivion and Morrowind and have greater enjoyment modding then killing assorted enemies and fulfilling endless quests. (Altho' I do, of course, enjoy that too!)

I have found that by building my 'own' world with the basics of the generic game, I can create characters, weapons, spells, situations and environments etc., not thought of in the original game and populating it with people (NPCs) that can be scripted to 'think' on their own and then playing the mod and watching the results of my creations is awesome.

How do I begin to 'mod' my own worlds with King's Bounty? Where is the most important (for me) editor?

King's Bounty with it's cute little playtoy buildings and assorted colorful characters and items is a game that should definately have an editor that everyone can have fun with.

How to change textures or script battles etc., are there 3 party 'tools' to do that with?