Change text in "Select" Option from "Please select"

Hi everyone.

I have the option for a product set to "select" with dropdown. I have options that are in addition to the product being bought. I would like to change to the text from "please select" to something like "no thanks" so that the customer does not actually have to click the drop down if they do not want the option. I have added a "no thanks" option but would like it to be that the customer can opt out without having to click the dropdown.
Example.
http://www.mailboxxpress.com/store/inde ... uct_id=127



Thanks for the help. You guys are great.

.../catalog/language/english/english.php
Change it to whatever text you want, and make the options non-required.

Thanks!! that fixed it. Your the best.

Is there a way to do this for one or two items but not for every Option Value on the site?