Looking for payment plugin with pull-down selections

Hi everyone –

I need to add a “payment page” for a customer that needs to be able to do the following:

1) Have several items with unique “add to cart/buy now” buttons. For example, two items are presented – “Books about Houses” and “Books about Beaches”. Each item has a pulldown list allowing the visitor to make a selection, and each has a checkout button of its own.

2) Also needed is a “seminar registration” payment where the user can pull down and select a seminar, enter their registration info, and then click to check out.

Payment options should include major credit cards and PayPal.

Any help appreciated!

thanks,
Andrew