heres how i did it, and it worked well.....
loosen the 3 bolts that hold the top of the strut (under the hood)...then take out the cotter pin in the big nut on the upper a-arm....take the nut off....take off the nuts on the sway bar and rod ends too....then put a floor jack under the lower a-arm, and lower it down as far as you can go which should take most or all of the load off of the spring in the perch....then try to pry the spring out...if you cant, get some compressors on there, and just compress them a bit, and they should come out pretty easy....then do the same for putting them back in....i didnt have to compress the springs going in because they were about 2" shorter than the stockers, so they went right in....then use the floorjack under the lower a-arm to compress the spring in between the 2 a-arms, and MAKE SURE YOU AIM THE TOP OF THE STRUT BACK INTO THE BOLT HOLES ABOVE! also make sure the spring is sitting in the perches the same way the stockers came out....then tighten tie rod ends, sway bar, and spindle bolts....then tighten the 3 bolts under the hood that hold the top of the strut to the strut tower....hope this helped!
EDIT: one last thing i forgot....get the car maybe 1.5 feet in the air....it will give you the most travel of the lower a-arm and hopefully the spring will pop out easier....and also VERY IMPORTANT, be careful of your front brake lines because you dont wanna tear one..