Show draft posts in archive page and single category archive pages

Hello,
I was asked to add the ability an expiration date of the posts to be set and they want links to choosen categories archives in the navigation. What I came up with was to use some of the expiration plugins that turn posts to draft and then make the archive page display all the posts in the category, even those with draft status. But here comes my trouble, I couldn’t find any info how to display draft posts in the archive page, is it possible ? Also I was unable to find in codex if I can get a link to a category archive, is this possible without plugin ?

Is there any easier solution that you can recomend ?

My theme is based on twenty ten, I haven’t modified the archives template so far.

Thanks for your time.
Best regards,
Meduncho