Thanks Phil,
As my software is not a web app I didn't want to involve JSON. But I might be forced to do it.
It is also multiplatform (Linux/Windows). At this time I don't use anything from TMapViewer or TMVMapViewer. I am searching for the right component to show some points in the map fast and easy. I thought that it could be easier just reading a list with points (with log,lat) and just add a mark into the map (and if possible to zoom in an area).
But as it seems it is not. I am a little confused which way to use. I don't mind to use TMapViewer.
Thanks for your links.