in case you need to know what a CV boot looks like.
They're the accordian looking things.
Like Tom said, the clicking may be coming from the CV joint which is inside the boot.

For NEW parts, VERY FEW places (like autopartswarehouse) carry anything for it.
Official Isuzu sites have parts, and there's a great parts guy many of us use at a former Isuzu dealership in Missouri called St. Charles Isuzu. He's been helping VXers with parts for many years and offers Free Shipping.
You can call him about availability. He knows the VX forward and backwards too.

Merlin
1-800-727-8066

The dealership's parts website has the same prices that Merlin quotes.
The site has all the schematics too, which is helpful.
http://www.stcharlesautoparts.com/

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FRONT DRIVER SIDE VIEW, OUTER BOOT, looking from front to back:
OLD AND DIRTY BUT INTACT, everything is dry, no grease anywhere:




FRONT PASSENGER SIDE VIEW, OUTER BOOT, looking from front to back.
Boot has split and grease leaked out all over:





ALL FIXED WITH NEW BOOT