on the passenger side, just feel for the socket and twist off, if you have really big hands it may be harder to take out, so get a friend with smaller hands to twist it out for you. no need to remove bumper really.

I have HID fogs on all my cars :D On my 3.0si it was too easy, but on the 40d it was a bit of a pain. On the left I have a radiator for the towing capacity increase option, and on the right the box. Fun.

Managed to get the fog light bulbs in a few weeks back when I changed the wheel arches. The wheel well liner on the RH side can be undone easily enough and provides just enough space to put the bulb in. The drivers side is easy through the front grill opening.