Populate captured information from website to jotform

Consider this scenario:

1. A user on my site browses a password-protected URL and authenticates successfully.

2. Based on the login information I retrieve some data that is specific to that user.

3. I want to load a JotForm form and populate some of the fields with that data.  I see I can create submissions with cURL, but I want to load the rest of the form so the user can complete the other entries.

4.  Each time a different user logs in in Step 1, a new form submission is created with that user's information.

Is this possible with JotForms?

I answered my own question.

http://www.jotform.com/answers/325001-How-to-Pre-fill-a-a-field-on-the-form-form

From what I understand you mainly wish to prepopulate your jotform with associated user information that is used on your database after they login.

I see you responded above with a thread that turned out to be useful for you so we're happy to hear that. Also, I would like to point out and recommend this guide which talks more about using prepopulation. Additionally, on your website it would first need to support it in order for your jotform to receive the captured data or alternatively you could create a custom script to do the same thing.