ActiveWin.com: Windows XP Section - Turn Off Default Services

Alerter
Application Layer Gateway Services
Automatic Updates
Many users prefer to manually download updates from Microsoft. If you wish to use the automatic update facility, leave this service enabled.
Background Intelligent Transfer Service
ClipBook
Computer Browser
This service should only be disabled if you are not running in a Windows NT / 2000 Domain environment
Distributed Link Tracking Client
Error Reporting Service
Fast User Switching Compatibility
Fax
IIS Admin
This service should only be enabled if you run the personal version of IIS on Windows XP
IMAPI CD-Burning COM Service
This service should only be disabled if you do not have / use a CD-Writer.
Indexing Service
Infrared Monitor
This service should only be disabled if you do not have an IR port on your computer, or if you do not use IR communications.
Internet Connection Firewall (ICF) / Internet Connection Sharing (ICS)
This service should only be disabled if you do not use either ICS or the ICF.
Messenger
MS Software Shadow Copy Provider
NetMeeting Remote Desktop Sharing
This service should only be disabled if you do not use the Desktop Sharing facility in NetMeeting
Portable Media Serial Number
This service should only be disabled if you do not have a portable MP3 or music device that connects directly to your computer via a digital interface.
QoS RSVP
Remote Desktop Help Session Manager
This service should only be disabled if you do not use the Remote Assistance feature of Windows XP
Remote Registry
Removable Storage
Routing and Remote Access
Smart Card
Smart Card Helper
SSDP Discovery Service
This service should only be disabled if you do not have any Universal PnP devices on your network.
System Restore Service
This service should only be disabled if you do not use the System Restore functionality of Windows XP.
Telnet
Terminal Services
This service underpins the following functions:
- Remote Desktop
- Remote Assistance
- Fast User Switching
Terminal Services should only be disabled if none of the above are in use
Themes
Uninterruptible Power Supply
Universal Plug and Play Device Host
Upload Manager
Volume Shadow Copy
WebClient
Windows Image Acquisition (WIA)
This service should only be disabled if you do not have a scanner or digital camera connected to your computer.
Windows Time
This service should only be disabled if not operating in a Windows NT / Windows 2000 Domain.
Wireless Zero Configuration
This service should only be disabled if you're not using a WLAN (WiFi, 802.11) card on your computer
WMI Performance Adapter
World Wide Web Publishing
This service should only be disabled if you're not running the personal version of IIS on your computer.