Monitor and TV calibration tools?

So here's the deal:

I just purchased a pair of BenQ XL2411Z monitors, in addition to a 48" Samsung LED TV.

What is the best calibration tool or website you guys know of in order to get the most out of my new screens? I don't want to have to spend any money. One site directed me to a $350 calibration "kit"...

Moved to Hardware.

You will have to spend money, colormunki are quite good.

@klunt_bumskrint: ok, thanks

I really want one but they start at $150+ it doesn't seem worth it at those prices.

It's really up to you, but for me as a graphic designer my Colormunki Display has been worth the cost. I now have both my monitors (of different models mind you) displaying the same colors. My only gripe is it tends default to a warmer display than I was used to but I quickly adjusted to it.

Otherwise you'll maybe be able to find some of the calibration DVDs and try to manually dial in the correct colors using your built-in controls. There's a reason the stuff like Colormunki or Spyders are so expensive and it's because you're getting essentially a camera and software package that does everything for you.