Using a flash application to trigger add-to-cart -- how do I do attributes?

So I have been working on a site for a client who is a jeweler. most of the site is a brochure of whats available , but one particular piece is customizable and order able. After a bit of work, I had the flash movie that is the preferred presentation by the client to link to the various products that I set up in a ZC mirror. I have zenid's generated and passed from the php page that the flash file is embedded in.

final problem is now I am trying to mimic the link that would send me directly to the shopping cart, and I end up on the products page - the product that was selected in the flash movie, but none of the attributed filled in.

attrib1 is white/yellow gold [ dropdown in zc ]
attrib2 is enamel coloring [ dropdown in zc ]
attrib-4-0 is name engraving [ text in zc ]

this is what the add to cart link looks like right now:

	../store/index.php?main_page=shopping_cart&action=buy_now&products_id=" + products_id + "&attrib-1=" + attrib1 + "&attrib-2=" +attrib2 + "&attrib-4-0=" + personalization +"&zenid=" + zenID "

I'm sure I am close, just need a bit of assistance.
Thanks!