For most models the special tool is a pair of hooks. Get a hanger that your dry cleaning comes back with. Fashion a couple of straight foot long sections, bend one end into something of a sharp J (a 5-10mm barb should do it), curl the other end into something you can grip (clock the grip 90-degrees from the barb). Send the hooks in beside the gauge cluster and dash shell about half way up/down on both sides. Go in about 5" and turn the hooks inward. Pull the gauge cluster out. Easier to do than to describe.
It would be nice to know what kind of car you have. Maybe this trick doesn't work on your car.