Create WordPress User after Payment

Hi Adrian Firstly thank you so much! What an amazing plugin for InfusionSoft users. I purchased the All access pass yesterday! Ok, so this is what I am trying to do now. I have setup the Payments Extension and it’s working well for buying our products from InfusionSoft. What I want to do is create a user account from the information entered during in the payment form. I see that there is no password field. So how do I go about creating a WP user account, assigned a specific role, AFTER the payment goes through. I am a developer so you can suggest code / hooks. Would be happy to get some guidance from you. Thanks, – Sadik