(complied from various sources)

Some might say it's a pretty straight forward job. The filter is under the rear of the car, just above your rear axle-it is secured by a single fastener, and has 3 "quick release" connections to the nylon fuel lines.

To Release Fuel Pressure:


Turn the ignition OFF.
Disconnect the battery negative cable in order to avoid possible fuel discharge if an accidental attempt is made to start the engine. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
Loosen the fuel filler cap to relieve the fuel tank vapor pressure.
Remove the cap from the fuel pressure service port.
Remove the engine identification cover nuts and cover.
Connect the SA9127E , or the J 34730-1A to the fuel pressure service port connection. Wrap a shop towel around the port while connecting the gage in order to avoid spillage. Refer to Fuel Pressure Gage Installation and Removal .
Caution: Do not drain the fuel into an open container. Never store the fuel in an open container due to the possibility of a fire or an explosion.
Install the bleed hose of the SA9127E , or the J 34730-1A into an approved fuel container.
Open the bleed valve on the SA9127E , or the J 34730-1A in order to bleed the fuel system pressure. The fuel connections are now safe for servicing.
Place a shop towel under the fuel pressure service port to catch any remaining fuel spillage.
Disconnect the SA9127E , or the J 34730-1A from the fuel pressure service port connection. Refer to Fuel Pressure Gage Installation and Removal .
Drain any fuel remaining in the gage into an approved fuel container.
Install the cap to the fuel pressure service port.

AND/OR PRIOR TO THAT...
a common "cheater" practise is to remove the fuel pump fuse and run the engine until it stalls, then crank it (wont start) for 10-20 seconds (1-2 automatic crank cycles) to minimize pressure in the lines.
ALWAYS WEAR SAFETY GLASSES AND DONT USE AN INCANDECENT (BULB TYPE) TROUBLE LAMP - FLOURESCENT ONLY!! (they've started more undercar fuel fires than almost any other source)

don't forget to buy a quality quick disconnect tool, if i had had one the first time it would have taken me more them to bleed the pressure than change the filter.