zpy by Jan Sott
Small tool which disables the default threats of a Windows XP installation. Besides disabling Windows and some of its components to communicate with Microsoft servers, xpy improves privacy settings and your system’s security.
http://xpy.whyeye.org/about/

Features:
- Disable Windows communicating with Microsoft
- Disable questionable services
- Tweak Internet Explorer and Windows Media Player
- Remove Windows Messenger
- Improve privacy and security
- Improve performance

v1.0.0 beta 4 (2009-08-01)
  • added support for 64-bit registry
  • fixed getting username on Windows7 (and perhaps Vista too)
  • fixed a bug restoring classic logon

It's always been 'beta' so go for it:

v1.0.0 beta 3.1 (2009-06-25)
* fixed startup bug

v1.0.0 beta 3 (2009-06-20)
* added temporary dialog (translation request)
* updated minixpy code
* modified warning when running on vispa/windows 7
* fixed /debug parameter

v1.0.0 beta 2 (2009-05-04)
* added /force parameter
* vispa: added help dialog for /force parameter
* removed backwards-compatibility function to pre-0.9 builds
* removed wikia searchengine support
* fixed caption bug on ioPage
* fixed bug in FirstRun

v1.0.0 beta (2009-03-26)
* added new features
-enable cd burning service (windows server)
-enable image acquisition service (windows server)
-disable shutdown reasons (windows server)
* added gui for profiles making/saving
* added installtypes for restore mode
* added server2workstation installtype
* added commandline-indicators to caption
* modified commandline parameters
* optimized code (search engines)
* fixed bug in ServTelnet detection