using this with paypal
I have now been usingthis with paypal and have thourally tested it using the sandbox and it works great to keep people from reging without paying. you can put the url of the set cookie in the return address of the paypal subscription button, once the user has paid it takes them back to your site and sets the cookie. make sure you have the metta refresh time variable set to "0" this will keep the page from being written to history and the user will never know the address of the page that sets the cookie.
Any questions let me knwo