first, sorry for my bad english! To make a short story, i did make a Vlite installation from a DELL vista DVD.. the vlite dvd work on my desktop computer but not on my gateway laptop with his ACHI SATA hard disk if i'm using the DELL DVD, the installation on my laptop work with no problem if i'm using the Vlite DVD, the installation stay forever (2hour ) at the last step of the installation ( the last step called "end of the installation" or something like that, my dvd is in french) If i load the sata ACHI driver from gateway before installing vista, the installation will proceed but at the first reboot, i got a blue screen... I really don't understand why the retail dvd work and not the vlite one?? since its basically the same thing???