To keep things in check, there’s a lot of things that can be done to optimize an XP image for a virtual desktop. This guide is created from several documents that are already out there but also from our own experience and experience from a couple of other VDI specialists.

This guide is based on Windows XP because of its low resources usage compared to Vista and even Windows 7. The general idea however also applies to those versions although specific services and registry keys will most likely not work. Skipping Vista, the next version of this guide will focus on Windows 7.

Not all steps are completely documented since most are obvious and some would take too long to explain (and keep things readable)

Source: http://virtuall.eu/blog/creating-a-vdi-template