Begin by sliding the fork boot from the forks. If you're still running OEM boots you'll have to use a straight blade screwdriver to release the bottom of the boot from the lower fork.
Next, raise the cap end of the fork slightly and remove the cap.
Reach into the fork and remove the spacer, washer, and spring. You may have to collapse the fork slightly to be able to reach the spring. Pull the spring out slowly so you don't pull a bunch of oil out with it.
Pour the oil out into a container. Cycle the fork once or twice to help get the residual oil out.
Next, you will need to remove the bolt at the bottom to separate the two parts of the fork. To do that you will need a tool to reach into the fork and hold the damper rod inside. I used a 12mm coupling nut, available at the hardware store. It's just a nut that is about 1 1/2 " long. The coupling nut fits in a 19mm socket and sticks out far enough to engage the damper rod. Put a piece of paper towel (or something similar) over the end of the socket, then push the coupling nut into the socket. This will prevent it from falling out. You will also need to add some extensions to the socket to be able to reach the head of the damper rod inside. Use a 5/16"¯ or 8mm allen wrench to hold the bolt at the bottom, and with a ratchet on your home-made tool loosen the damper rod inside. Use a rag under the top tube to cushion it and prevent scratches.
With the damper rod loose, you can simply pull the two halves of the fork apart.
Pull the spacer from the end of the damper rod, then invert the top half of the fork and shake it around a little bit to get the damper rod to come out.
With a screwdriver remove the snap ring over the dust seal on the lower half of the fork. If you look closely you'll see the two ends of the snap ring. Pry one end out, then work your way around until the snap ring is removed.
If you have a seal removal tool use it to remove the dust seal and the oil seal from the fork. If you don't have a seal removal tool a large wrench works well, just be sure to use a rag to cushion the fork so the wrench doesn't mar it. Rainman suggested using a tire iron which I think is a great idea. Again you just need to be careful not to nick or scratch the fork as you remove the seals.