New Post: MapWinGIS 4.8 questions

4.9.3 works on XP SP2 or higher.

As for tiles I'd suggest you to start from opening mwtiles.db3 databases (tiles cache) in some SQLite browser. Basically you need to:

• read images that MapTiler created and insert them in the db;
• add custom tile provider to the map (Map.Tiles.Providers.Add).
  

Id of custom provider should be the same as values in [Tiles].[Type] field in mwtiles.db3. [TilesData].[Tile] should store tile bitmap as raw bytes. I haven't done it myself, so don't have any ready to use code. Hope this will be enough to start.