I purchased my cd rom here it cost me $60 plus shipping , and it does not work on windows 7 The cdrom is the 1st version which is only comparable w/ early versions of windows e.g 98 etc. Don't make the mistake I made buy it directly from the lippincott website .They have the 2nd edition cost less than any of the seller here and they neglect to state is the 1st edition they are selling.brand new is costing something like $40 and you get BOTH = BOOK & CDROM and is comparable with windows 7 .I regret not going directly with lippincott i learn the hard you don't always get the best deal with the seller's listing items in Amazon. Now I have to purchase it again :(