Oy...thanks, All. I might just replace the microwave and call it a day. I don't cook much anyway and most of what I do is on the stovetop -- soups and sauces....and I do have an oven. My existing unit is pretty big. If anything getting a new one would probably increase the distance from the stovetop. It vents outside behind it and also has a grill on the upper edge with a cover with the long horiztal lines. Not sure what that does. Does that tell you anything? I have taken it off the wall before and to a shop to see if the light underneath could be fixed (never put the wrong bulb in there) and don't recall there being any metal sheeting. I'd probably need a kit if I went with the convection.