Graphics and coordinates in Excel

Okay, picture this: Let's say that you have a group of graphics in any format, and you want to map their location with x and y coordinates or any other method, pretty much the same way you would map a hotspot on a web page's graphic. Now lets say you want to keep track of those locations or coordinates on an Excel spreadsheet. Now to make it even better, lets say you want those coordinates to dynamically update as you move those graphics around within a defined area or on top of another graphic, therefore changing the coordinates. Is this possible? Is there a trick I can use for this? Would I need to create an external script or application for this purpose? And if so, how would it more or less work?