Hi Sue, I believe most of the Dell ram from that period were a propriety type made by Kingston especially for Dell, and they are NOTcompatible with any non-Dell computer. I had to add 512mb ram to a friend's Dell computer of similar vintage, and it cost over $100! My suggestion would be to try and find out what they are from a "friendly" Kingston rep.! If you find out what they are, they may sell on ebay, in which case you could buy some real RAM!! Good luck Art The NOSPIN Group has added a new feature on our website, web based bulletinboard for questions and answers: Visit our sister website at http://nospin.com