I always do my computer shopping in Sofmap. They have loads of stores around the Akiba area. They all deal with different lines of products. PDAs, Computer Parts, Mini Note books etc but you can find info about the various outlets at any of the shops. They are mainly secon-hand shops but they give you a couple of weeks warranty on your used computers. Bought me a nice IBM Think pad there 3 years ago and its still working OK.