Hi there, I got a mini paypal script that works like a shopping cart. It accepts payments with paypal pro, the problem is, the script wants to use the certificate mode instead of api signature which is what I want to use because I have a couple other sites already running on the signature system already. Paypal only allows one or the other. Is it easy to change the script over? Can some one here do it? I will certainly pay the only things is I need it on the fly. Thanks Mike