Is there a LINK I can use instead of a banner?

http://confederation1867.altervista.org/

I like things to all match on my site. If you scroll down the left hand sidebar, you will see I made my own ad for Altervista, in text.

I would like to have an "affiliate link" or whatever, in order to link my ad back to Altervista. Where could I please find an affiliate link for this?

Thank you.

What do you mean exactly with affiliate link? If you want to put a link and earn from it, that is not possible. To earn money you have to use the banners AlterVista provides.