It's actually quite easy, and last night I finally got the chance to do it.
The basics of photographing lightning include a DSLR camera, and a tripod. Most people recommend having a cable release for your shutter, but I didn't use one because of the length of my shutter speed.
Here are the steps.
1) Find lightning.
2) Set up camera on tripod.
3) Point camera in direction of lightning. (trickier than it sounds)
4) Don't get hit by lightning
4) Choose aperture that will allow for appropriate depth of field (I used f/8)
5) Set exposure to B or BULB (the bulb setting allows you to keep the shutter open for as long as you like, this is the part that requires fiddling depending on the amount of available light. It is also the reason that you would want to use a release cable as you don't want the camera to shake.
6) Experiment, and enjoy the results
After I showed Michelle some of the pics I got, she told me to 'get my butt back out there' I said 'you do it it's easy' so after asking how, she did it! This is the one that she got. It's pretty freakin' awesome!
The toughest part about photographing lightning is actually pointing your camera in the right direction at the right time. Michelle and I likened it to switching slot machines at a casino. There were a lot of really cool shots in the sky last night, but most of them resulted in someone else walking away with the jackpot. Oh to own that wide angle lens.