Extending the editor - 2d viewports?

Is there any way to create a new window to render 2d images/etc into? I need to display some data, showing the position of an object on an X/Y grid at certain times, and I can do this easily by just drawing an image at the locations and drawing a line between all the images. But I want to do this in a seperate window so the user can edit the positions and have that visual feedback (i am doing a cutscene editor sort of thing).

I guess you know the EditorWindow class, the GUI system and the GUISkin concept of Unity? If so i’m not sure what else i could answer to this question. You aren’t very specific in your question.