Ok Guys its all pretty straightforward to do, probably the only special tools you need are circlip pliers and a vice is handy.
Firstly remove the shafts, there is a good description here on pages 10 & 11
http://www.scribd.com/doc/4964854/GTR-Engine-Removal
You will also need to pop out the cup that is in the diff housing, a couple of large screrwdrivers should do the trick (carefully)
Next I usually cut off the old boots and give the shafts a good clean ready for new grease & boots.
Below shows the drivers side, the passenger side should be similar (I only needed to do my drivers side, but the passenger side looks to be exactly the same procedure).
You need to remove the circlip that holds the bearing assy (part A) to the shaft (part B) in the pic below.
Remove part A from the shaft and you can now slip on your new boots.
Replace part A and circlip (grease the splines) and complete assembly as below.
This is just a matter of packing the bearings and cup with grease and fitting the new boots. Make sure there is no grease on the part of the boot that will be clamped to the shaft & cup (under where you tighten the stainless ties).
Tighten the stainless straps by stopping them rotating with a flat blade screwdriver whilst gripping the strap with locking pliers. Bend the strap over once, bend down the tabs to keep in place, and bend once again over the tabs and cut off the excess.
Reinstall the shaft in reverse order of taking it out.
I think this covers it if you get stuck on anything let me know.
Hope this helps.
Good Luck,
Jon.