A few years ago, I bought a new Dell computer directly from Dell, used my Diners Club card and received Club Rewards Points. On a related note, you could buy a Dell from Costco, (online only,) and use your affinity Amex, Visa or MC. The advantage of buying it from Costco, is they have a six month "return" policy. If anything goes wrong within the six months, you can exchange it for a brand new one at any Costco store. If there isn't one in your area you could ship it back to them. You'll also likely get the lowest price from Costco too. You can't beat that!!