Try using an XP driver:
http://support.euro.dell.com/support...0&fileid=56102
--
Andre
Blog: http://adacosta.spaces.live.com
My Vista Quickstart Guide:
http://adacosta.spaces.live.com/blog...3DB!9709.entry
"Brian S. Paskin" <brian@paskino.com> wrote in message
news:0c483b9e-4905-4b61-92b9-915c99fc11a2@v67g2000hse.googlegroups.com...
> Hi All,
>
> I built a new PC for my mother and installed Vista Home on the
> system. Everything worked fine at my place, but when she plugged in
> system at her place she receives a message that the display size is
> not supported. Booting in safe mode works, but the Vista pops up a
> message about unknown hardware. The monitor is a Dell E171Fp. There
> is no monitor in the device manager.
>
> Since Dell does not have a driver for this monitor, would it be better
> to add a generic monitor? Add how would I add a generic monitor?
>
> Thanks, Brian