anyone know how to open headlights to replace hid's ?
 

I am getting ready to replace my HID bulbs in my 01 is300 and have been told that it is extremely difficult to open and replace HID bulbs. I would like to know what i am getting into before i rip my car apart....any good advice? I am good with a wrench, but don't want to get in over my head....and then have to take it to a shop. Any advice or direction would be much appreciated!!!!!