Promotions and Quantity Trigger

Here's what I'm trying to do:

I want to use the Promotions feature like an Instant Rebate. I want the Promotion to apply to one product, regardless of the quantity.

So, I set up a promotion to take $100 off a specific product. However, even if I set the Quantity Trigger to 1, the promotion doesn't take effect until the quantity ordered is 2 or more. There does not seem to be a way to set the Quantity Trigger to 0. I want the promotion to apply even if there is only a quantity of 1.

Is there a way to make this work? If so, what am I doing wrong?

Thanks in advance!
Ben

We sell photographic equipment and are required to offer a manufacturer's rebate. Some rebates are instant (applied at checkout) and some are mail-in with proof of purchase. In the case of an instant rebate, we don't want the customer to have to enter a coupon code.

Doesn't really matter now as I solved the problem by editing the ModPromotionPrd.asp file.

Thanks!