How to configure VeriSign Payflow Link for your site
First, login to the Verisign Manager via the link provided to you by Verisign. Should be https://manager.paypal.com
1.	Select the 'Account Info' menu item at the top of the screen.
2.	Select the 'Payflow Link Info' option.
3.	Set the 'Return URL Method' to 'POST'.
4.	Set the 'Return URL' to equal:
	http://www.your_website_url.com/shopping/pgm-show_invoice.php'
5.	Check the 'Silent POST URL' box and set the location value to:
	http://www.your_website_url.com/shopping/pgm-silent_post.php
6.	Scroll to the bottom of the screen and click 'Save Changes'.
Your Payflow Link system is now configured!
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