Since checkouts with our system use a third-party checkout site such as PayPal, we are unable to add any functions to those checkout sites. However, if you are using the standard E-junkie Cart button codes, you can add some custom text to your shopping cart. Just add the following lines to your View Cart code on every page with cart buttons, just before the "// -->" line in the standard View Cart code you obtained from Seller Admin:
function EJEJC_config() {
EJEJC_POSTCALL=true;
}
function EJEJC_shown() {
jQuery("#tdPmnt").attr("innerHTML",
"By placing your order, you hereby agree to our <a href=http://www.yoursite.com/terms.html target=blank>Terms and Conditions</a>);
}
...where http://www.yoursite.com/terms.html would of course be the filename of your terms and conditions page.
We don't have a built-in way of disabling the checkout buttons until a checkbox is ticked, but you might be able to accomplish that by adding some custom javascript to your page. If you'd like to hire a developer to help set that up, we can recommend the competent, E-junkie-experienced developers listed in our directory here:
http://www.e-junkie.com/ej/developer-directory.htm