How do I change my starting location?

From OHRRPGCE-Wiki

By default, your hero starts in the top left corner of map 0. This is seldom the place you want your hero to begin! To change the location, pick Edit General Game Data from the main menu, and you will see options to change starting X, Y and Map. To get the X/Y coordinates you want, just look at the numbers in the lower-left corner while you are in the map editor. Those are the cooridinates of the tile that the cursor is on.