How to make a http submit?

Hi:

I've been trying so send information to a web page using Acrobat Designer 7 to a page in ASP.NET 2.0
For that i've used the http submit button, configured the URL to a specific url.

Now my question's:

How do i put data in the page? can i use something like this: http://...........page1.aspx?nome=TextField1

Or do i have to use another method?

I've tryed this procedure:
http://www.ammug.org/drupal/node/101

But it fails when i change the XML from format="formdata" to format="urlencoded" (gives me an error in PDF preveiw)

Any help would be very apreciated
Marco