Upon registration, it isn't redirecting to welcome page

If you register here:
http://www.kluanecorp.ca/register/

you are NOT redirected to the Welcome page I created:
http://www.kluanecorp.ca/welcome/

...instead, it redirects here:
http://www.kluanecorp.ca/register/?action=registeruser&subscription=1

Can I somehow make it redirect to the welcome page after registration?

Thanks!