Create a bootable USB-Stick from the Vista-DVD. Open a command window, then enter the following commands,
replacing [X] with the Number of USB-Stick (from LIST DISK command), [DVD] with the letter of your DVD-Drive where
your Vista-DVD is located and [USB] with the letter of your USB-Drive.
SELECT DISK [X]
CREATE PARTITION PRIMARY
SELECT PARTITION 1
FORMAT FS=FAT32 QUICK
XCOPY [DVD]:\*.* /s/e/f [USB]:\