As long as you have not been running with torn boots for a really long time, and they do not make any noise or anything you should be fine. The only way to REALLY know though is to pull the CVs, clean them up and inspect the balls and cage.

Like Billy said, the job is not that hard, but for someone not mechanically inclined it might seem overwhelming and messy. You do need some tools to do the job and for a first timer, it will take you a while.

All that said, if I was you, I would go to your local Napa or whatever and buy a set of inner and outer boots. Then, call around to your local shops and just tell them you need your CV axles cleaned up, regreased and rebooted and see what they charge. Provide them with the new boots and that should be all you need to do.

I just did mine, here is a link to my thread with some good pics so you know what you are looking at/talking about.

http://vehicross.info/forums/showthread.php?t=21040

Bart