Go to the Marlboro site, https://www.marlboro.com/marlboro/login_input.action and either register or log in. Then click on Promos at top right. Enter promo code in the box and you can choose either (10) $1 coupons off a pack or (2) $5 coupons off a carton.
Promo code: MAR1726

Offer expires 2/15/10.