backup bundles button cart link multiple products sell setting single software title titles variables

I am setting up my cart and was wondering if there is any way to add multiple products to the cart with a single button. We often sell bundles (like two software titles or a software title and a backup CD). I tried to put multiple i= variables in the add to cart link, but that didn't work. Let me know if there is a way.

I'm sorry but that's not possible with E-junkie cart.