You'll have to do the x,y mapping of employees to locations yourself... if you know Bob sits in cubicle 47A you'll have to find cubical 47A on your map image and note the x,y location
you should mark. ( Personally, I would make a little program that displayed the image and had a mouse listener returning x and y position to help me with this... ) You could also have a translation method that translated coordinates from whatever the company uses to x,y locations on the image depending on if the companys coordinate system makes sense...
To store and retrieve images in an array...
HTH,
-Nate