You can but it’ll actually take quite a bit of editing Form to accept the query strings. That’s assuming your registration form can send them.
First, you must register all you query strings with WordPress by creating a function and hooking into the query_vars filter. See this: http://thewordpresswarrior.com/616/passing-variables-via-url
The you would have to edit Form to do two things. First the easiest, get the query vars using this function, http://codex.wordpress.org/Function_Reference/get_query_var. The second, come up with a way to tell form to have sections open by default so the form inputs are available.
I hope that helps to point you in the right direction.