Blocking "Add to Cart" button until conditions are met

[Ripper]

I have a cart customer with a few items where the customer must meet certain conditions before purchase. I have tried, unsuccessfully, to add code to not allow the "Add to Cart" button to appear until those conditions are met. All I need to do is add a cookie that is read when a certain page is opened for this item. Once that page is opened, and a "Terms of Purchase" agreement button is checked, the page returns to the item page, and now the "Add to Cart" button is needed. I have the additional page written with the cookie all ready, I just need to know where to intercept the "Add to Cart" button on this item's page and if that is even possible at all. I haven't had much luck with any of my attempts to add additional cookies within the shooping cart system on any of my sites.

[clydejones]

Not sure if this is exactly what you are looking for but.....

in admin -> configuration -> regulations there is the following option

Show the Terms and Conditions during the checkout procedure which the customer must agree to.

[Ripper]

Nope, that's not it. I am sure what I need is an add-on. I have tried to include cookies and/or scripts to the cart before without much success. I need to find the correct place to intercept the creation of the "add to cart" link for this one item, and not let it happen until a special condition is met.