F8 during starup and select the option to turn off the unsigned driver
check. This is not a persistent setting from one reboot to the next.

"Kue2" <h.j.kennedy@sympatico.ca> wrote in message
news:OjVMGJKQHHA.4672@TK2MSFTNGP06.phx.gbl...
> How do You stop Vista from Blocking unsigned drivers? I want to beta test
> a program & Vista keeps blocking the unsigned drivers.
>