Power Help

[Rockjay420]

Im looking to buy 3 lcds second hand from criagslist. They are 17inch Samsung Syncmasters 173, but they are missing the power supplies. They need 14v, 3a, and 45w, my question is, will a universal notebook adapter of at least 14v and 3a but 70w and a fitting tip work?
What is the best way to go about this, ive got a radio shack gift card id like to use up, but i havent found anything for 1.5amps on their website.
please advise, great ones.