andymdesign on "add new user with URL variable?"

i was looking here, http://codex.wordpress.org/Function_Reference/wp_create_user

i was wondering if its possible to add new users with a url string?

for example:
link: http://www.website.com?fname=John&sname=doe&pass=pword&email=my@email.com

some how i would need to parse this and insert it into the wordpress add user function.

wp: <?php wp_create_user( $username, $password, $email ); ?>

any ideas? possible?