register shows wrong page

Hi, as a new user who wants to register I want the user to see my sign up page which shows three individual options. If I clik the menu button the sites shows correctly. But if I am not logged in and go to account it shows following site:
/register/?step=register
There is a registerform but no way to show the signup page. I need people to choose one of these packages and not to fill out a standard form.

How can the system link to the correct site with my three options?

thanks and kind regards R.