Yes read as many writeups as you can find, there are tons of them on all the boards.
Some tips from my personal experiences:
There's absolutely no need to seperate the tranny from the engine, that would be a lot of completely unecessary work.
Buy TWO seals because you'll probably mess one up and they're cheap and you won't want to have to make a second trip to the parts store. Most parts stores will only stock one so you might have to make two stops but it will be worth it. The one piece rubber oil pan gasket is a good idea.
This job is messy as all getout. Drain the oil then let it sit overnight with the plug out before you drop the pan. You could rig up some plastic to keep stuff from dripping on you the whole time.
On mine with 230k it was easy to pop the upper half out with a thin piece of metal but BE VERY VERY CAREFUL not to ding the crank or bearing cap mating surfaces. Use a piece of cardboard or something as a shield to protect the crank in case the tool slips.
Be sure to seal the right bits with a thin even coat of RTV. Be sure to clean all the oil off the surfaces to be RTV'ed with solvent. Be careful not to clean all the oil out of your crank bearings or get solvent in there.
Be carefull to install the upper seal in the proper orientation. The bottom one is assymetrical so you can't screw it up.
Do not overtorque the oil pan bolts. Use a torque wrench or it will leak! apply a thin coat of RTV or hitack or something to both sides of the gasket and to the mating surfaces. If you do break a bolt you will have to drill and tap it or it will leak!
After I did mine it leaked worse than ever, like 2 qt every 100 miles or so. I never did figure out what I did wrong. Don't rush, take the time to carefully do the job right the first time, you don't want to do it again.
