I just put a new boot on my trackick and they sell a boot called a quick boot at advanced auto. How it works is you cut the old boot off, pack new grease,wrap new boot around the shaft, intall the screws and nuts that holds the boot together, clamp the nut with pliers, wrap large band and clamp with pliers, wrap small band and clamp with pliers.
Ahhh, the "Spit [edit: I MEAN the "Split"!] Boot"...ÂÂ
Yes it is easy to install this kind of boot but it comes with a price: You can't expect a perfect seal if you drive offroad with these. I installed a set on a military truck that I once owned (Pinzgauer 710M) and the results were not as good as I hoped.
IF you are willing to do some mechanical teardown work, the cheapest way to do it is to buy the regular full boot replacement/grease repacking kit and install them. They are available at most auto parts stores. It will require the following:
1. Removal of the CV shafts. A Chilton (or -- shudder -- Haynes) manual will help you with this process. It may require you to disconnect the hub assembly - especially on the right (passenger side on North American Vehicles) side. Not hard, just annoying.
2. Follow the service manual instructions (none to speak of will come with the boots -- they fit several makes of CV shafts) OR go to Ack's FAQ (see Signature) for an article on how to tear down a CV shaft to re-grease and replace the boots.  Do a search for
cv.
3. An option to the difficult-to-install metal bands requiring a special tool are Baker ties -- those long plastic cable-bundle securing devices. The generic name escapes me right now -- many electrical supply houses call them Baker ties. Get some extra-long ones that will wrap around the CV joint circumference.  I have a set of Baker ties on my '93 Sidekick that have been doing the job for over a year now with no problems.
Hope this helps!