Back the car up on ramps for ease of access and pull the ground strap off the battery for safety sake before you get started with removal.

As you're laying underneath the rear of the car looking up, you'll see a hose coming off the right side. It has an L-shaped metal piece that connects to the filter. The filter has a counter nut on that side. You'll use 2 wrenches - one to hold the counter and the other to loosen the metal end of the hose. If you do not apply counter-resistance, you'll tear up the hose. You may want to check this hose for hardness. Over time, they get very brittle and can rupture and that ain't cool. This would be a good time to replace it if it's hard as a rock. Dealers get $30-$40 for this hose.

The other side of the filter also has a counter nut fastened to it as well. Same deal - one wrench goes one way; one goes the other to loosen.