I am creating signup page which is linked to Paypal.com. So when people signup it directs them to Paypal to pay for subscription. But before they signup I want them to check a box saying they accept all T&C's.

But when they check the box then I want it to appear with an image I made saying " Subscribe" which is linked to Paypal. So they can't subscribe with out agreeing to T&C's.

I know there is easier and other ways but I would really prefer this way.

Many Thanks