lincon

Hi Guys, Great site. I don't know if you've ever used Paypal but you can't block a buyers email address like you can on Ebay. I thought of having a page on my site that would require a customer to enter their email address before they get to Paypal, I'd like to have a block list so if they enter an email address that I'v added on a block list they will have a message "Out of stock" just so they don't try a a different email address. But people that are not blocked will continue to Paypals site. Does anyone know if there's a website that can do this, if not would I need php for a dynamic list, if yes.... anyone know how the code would go for that? Thanks