I have to slightly disagree with the group. While you can definitely wait until 90-100+K miles, it is typical to change the timing belt at 60k. Once the timing belt is off, it's easy to do the water pump and drive belt at the same time. If you chance it on the timing belt and it breaks, you can do some serious damage to your engine or even kill it all together. I just changed the belts and my V-6 was just over 60k. Admittedly, it could have gone over 60k, but I am no gambler and did not want to risk engine damage. I paid about $600, but later found out that a friend of a friend could have done it for half.