here are links to visa, mastercard & american express Gift Cards. you use them the same as a Credit Card.
http://www.thegiftcard.com/WhatisBestPresentGiftCard.aspx
http://www.bankofamerica.com/giftcard/
http://www10.americanexpress.com/sif/cda/page/0,1641,16126,00.asp?aexp_nav=shopgiftcheq