[Zope] Outbound HTTPS Request

Hi, I am trying to implement a subscription process using PayPals (http://www.paypal.com) IPN (Immediate Payment Notification) service. This service sends me a notification of a payment (via http), directly from the paypal server. This is easy to process using Zope. However, I am required to validate the payment, using a secure link. My Zope Server needs to send a secure HTTP request to the remote Paypal server. My question involves two parts: What is the best way (or even a way) of sending an outbound server to server http request from my Zope server to another server? How can I send a https request (using a verisign certificate) from Zope / Python? Thanks Kevin