Yeah, I wouldn't drain the tranny fluid, you won't loose that much probably not enough to even show up on your dipstick in my experiance. I'd get a pan under there though to catch what little comes out.
The tools you need from autozone are as follows...
FWD Axle puller Adapt. = 27058
Slide Hammer = 27033
All it is is an attachment and a slide hammer. You put the attachment behins the cv joint on the tranny side and wack it out with the slide hammer.
Which side are you doing? If its the drivers side, once you break it free pull it out slowly, IF YOU SEE THE OUTPUT SHAFT ATTACHED TO THE CV JOINT, REINSTALL IT IMMEDIATLY, DO NO PULL IT OUT, TRANSMISSION DAMAGE WILL OCCUR!!! The passenger side you have nothing to worry about. Before installing the new shafts, put some tranny fluid on the shaft end that will go into the tranny and on the seal on the side of the tranny. This will help prevent any seal damage and future leakage issues there.
I recommend having a quart of tranny fluid handy to top of
