"VistaPE is a system based on the kernel of the newest operating system Microsoft Windows Vista. VistaPE uses technology and largely resembles WinPE 2.0 at Microsoft, but has a graphical shell, expanded set of supported devices and functions, and can run almost any Windows program. VistaPE is meant to be a universal tool with the flexibility to grow with your needs. VistaPE can be loaded on regular or crashed systems and allows the user to get full access to all disks in order restoring data, checking for viruses, fixing system boot problems, transferring data onto a network or through the Internet."
This information brought from VistaPE website: http://www.vistape.net/vistape.html