My girlfriend plans to buy a macbook and iPod using the Back to School promo. She is also a filmmaker, which in TX means it's a tax-free purchase. We know Apple will give her a student discount, and we know they allow these tax exemptions. Does anyone know if they will or will not combine them in a single transaction, or if this would affect the iPod rebate? She would also like to know if she can split the purchase across two credit cards.