Hi, I've a page type content in my site. This page has a html form. On submitting the form, I invoke a url which is mapped to a callback function. In this call back function, I need to perform validation. If validation succeeds, I need to forward request to paypal for the user to make payment. I downloaded and enabled paypal module, but not sure how to achieve this functionality. In other words, how do I programmatically forward the user request to paypal site. Please let me know. Appreciate your help. If there is a better alternative also, please let me know.