I have replaced HDDs on desktops without a problem, but never on a laptop. I want to replace the drive on a Dell Latitude CPi D266XT with a (quietest?) Fujitsu ATA100 type drive, since the current drive is starting to sound like a wheat combine. Am I going to run into any compatibility issues? Is there any big difference between replacing the HDD on a laptop as compared to a desktop? Thanks for your indulgence. Camion