How Do I Create A Link To A Page That Is Protected?

I am stuck and I hope someone can assist.

I have an application behind a login. When you login, you are given a choice of two things to do (this is in a drop-down box.) When you select, you end up on another page which allows you to download a program.

Everything works great but I was just asked to put a link on the "download" page that will take you back to the selection page. This is impossible since the "selection" page is also the verification page for the login. Obviously I can not tell the page to ignore the login verification.

When I click the back button on the browser I get the selection page so I know its possible to do, but how do I create a link back to that page without having to login again?

Thank you for any help.

Amy