Hi, I'm a Zope newbie who's more familiar with C# than Python. I've encountered an obstacle and am unable to find what's wrong with my approach. In order to solve the problem, I have searched this group's archive as well as other resources on the web. Some posts earlier this month were related to the problem but didn't address it exactly. I'm trying to implement support for PayPal Instant Payment Notification (IPN). IPN sends a POST to a URL on our Zope server. I decided to implement a Python script to handle the POST. The first task of the script is to send a POST back to PayPal in order to verify the transaction originated from PayPal. To do that, I learned that I could use the features in the httplib module. However, if I have a crappy test script like the following: import httplib result = httplib.HTTP("http://www.paypal.com/cgi-bin/webscr") return result Then I receive the following error when posting to the page: Error Type: Unauthorized Error Value: You are not allowed to access HTTP in this context In my search for help, I learned that Zope allows Script objects to access a subset of the Python modules, so I assumed that was the reason for the error. In my search for help, I happened upon some articles about using External methods to access modules. So I put the "result = httplib..." line into function verifyPayPal, module ipnSupport.py within the Zope\Extensions subfolder. I then added the extension to the same folder containing the Python script. The extension has ID ipnSupport, referening the specified script and function. When I run the following script... result = verifyPayPal return result The following error is returned: Error Type: NameError Error Value: global name 'verifyPayPal' is not defined The same error occurs if I call ipnSupport instead of verifyPayPal. If I try to import module ipnSupport then the following error is returned: Error Type: ImportError Error Value: import of "ipnSupport" is unauthorized So I guess my questions are: 1. Why can I not import httplib into a Zope Python script object? 2. Is an external method only callable from a DTML object? If it can be called from a script object, how do I do that? Thanks for any help or clues you can provide. -- Sean Winstead