Hi Ron-
Unless I'm way off base as far as web PDF's are concerned, if you are trying to get a windows like experience where you display the form as part of your app and capture the data the user filled in, it's not going to happen. Once you push the PDF out to the user, the only way to get the form back is to have the user save the PDF and then upload back to the server. Probably too many steps and way to hard for the typical user.
You might look at capturing the input in a web form (that's what NetTalk is all about) and then pushing the filled in form back to the user. In this case, it would be only for the user to verify.
HTH,
Gordon