The following KB (Knowledge Base) article from Microsoft should assists you in using the Sysprep tool to automate a successful deployment of Windows XP.
Also, there are several new features that are available with Windows 7 that will assist you with the deployment and management of a large number of workstations. Enterprise IT infrastructures are increasingly complex to manage. The Microsoft Desktop Optimization Pack (MDOP) is a dynamic desktop solution that is available as a subscription for Software Assurance customers. The solution suite enhances application deployment and compatibility, increases IT responsiveness and end user uptime, and helps reduce total cost of ownership (TCO) of your desktop software and IT management.
Also now available is MDT 2010 (Microsoft Deployment Tool) which will help you create images and automate the OS and application installations, data migration, and desktop configuration process.
Should you require additional assistance and guidance, Microsoft does have an official Windows 7 Support Forum specifically for IT Pros . It is supported by product specialists as well as engineers and support teams. You may want to also check the threads available there for additional assistance and feedback.
Microsoft Windows Client Team