big big drain pan - and make sure you open the air hole on it. i didnt the first time :
http://986forum.com/forums/showthread.php?t=21667
i assume you have some ramps. also take a short drive to warm it up for a few minutes - ive found that helps a little, but your choice.
open the plug, let it drain a while (i give it an hour, but know thats overkill), change filter. put it back together then fill. i fill with 8 then check from there. almost always takes 9 and "a bit."