The Dell Latitude D600 is quite old now, but I wanted to give it a chance to be recycled in a W7 machine.
After the installation of the OS that went well, I had several problems with the wirelesss network adapter and the graphic card. Checking on the Dell web site, no Windows 7 or Windows Vista drivers for such hardware. Finally, installing the Windows XP ones made it and except the fact that today I don't have the Aero themes working (needs a WDDM driver) everything seems working well.
Notice that the performances are very good for a pretty old laptop.