If it's a screw out bulb, simply obtain some sticky tape... any kind will work, but the ubiquitous duct tape works best. Cut off a piece of tape about 8 to 10 inches long. Turn it inside out (the sticky side is now on the outside) and stick the two ends together in a loop. Now (after performing all the saftey requirements... shut off switch, use good ladder) simply place the tape on the bulb and grasping the tape turn the bulb out. Use the same tape to replace the bulb. Make sure the bulbs are cool.
Alternately find a hardware store (at least that's what we call them here in the U.S.) that handles these:
http://www.amazon.com...id=1315955615&sr=8-10 ... works like a charm... (use a little spit on the underside of the suction cup to help it hold...)...