Services
list & Recommendations
Task
Scheduler. Enables a program to run at a designated time.
Much like Task Scheduler in Windows 98 this can be used to
schedule certain programs be to run at specified times & such.
Personally I leave this set to Disabled & run the programs
myself, although if you need to have task to schedule then set it to
Automatic.
TCP/IP
NetBIOS Helper Service. Enables support for NetBIOS over
TCP/IP (NetBT) service & NetBIOS name resolution. If your
Internet connection is setup to enable LMHOSTS Lookup
then set this to Automatic. Otherwise you may set this to
Manual.
Telephony.
Provides Telephony API (TAPI) support for programs that control
telephony devices & IP based voice connections on the local
computer &, through the LAN, on servers that are also running the
service. Leave this set to Automatic, generally this
Service is started when you load Windows 2000 anyway, even when set
to Manual.
Telnet.
Allows a remote user to log on to the system & run console
programs using the command line. In the event that you still use
Telnet ,or wish to enable others to (Locally or remotely)
access your system via Telnet set this to Automatic. Otherwise
you should Disable it altogether, this will improve system
security as well.
Uninterruptible
Power Supply. Manages an uninterruptible power supply (UPS)
connected to the computer. If you are connected to such a power
supply leave this set to Automatic, otherwise leave it Manual.
Utility
Manager. Starts & configures accessibility tools from 1
window. If you don't use (or have Uninstalled) the Accessibilty
Tools in Windows 2000 you should set this to Disabled/Manual.
If you use Accessibility Tools set this to Automatic.
WMDM
PMSP Service. This Service is added during installation of Windows
Media Player 7.
Seemingly this Service deals with the Windows Media
Device Manager WMDM (Thanks Belial666),
although if
anyone has any more specific information on What
this Service actually controls please Email
Me. Currently I've found setting this to Manual
causes no noticeable effects in Windows Media Player 7.
Windows
Installer. Installs, repairs & removes software according
to instructions contained in .MSI files. Leave this set to
Manual. This will allow you to Install/Uninstall/Repair
programs listed in the Add/Remove Programs applet in the
Control Panel. You should set this to Disable this if
you don't wish others to have the ability to change any software
installation, or to install Programs/Hardware which use the Windows
Installer.
Windows
Management Instrumentation. Provides system management
information. WMI is a management infrastructure in Windows 2000
that supports monitoring & controlling system resources through a
common set of interfaces & provides a logically organized,
consistent model of Windows operation, configuration, & status.
Leave this set to Automatic.
Windows
Management Instrumentation Driver Extensions. Provides systems
management information to & from drivers. This should be set
to Automatic as it seemingly gets Started even if you
set it to Manual. Setting it to Disable (Or attempting
to Stop the service) will display the following error window.

Windows
Time. Sets the computer clock. You may leave this Service
set to Manual.
Workstation.
Provides network connections & communications. Should you
have the Alerter or Messenger Services set to Automatic
then set this to Automatic also. Otherwise you should be able
to safely set this to Manual instead.
World
Wide Web Publishing Service. Provides Web connectivity &
administration through the Internet Information Services snap-in.
If you have IIS 5.0 installed, & is configured to provide a
Website on your machine set this to Automatic, otherwise leave
it set to Manual.
Should
you find that any of the Services you have attempted setting
to Manual are Started when Windows 2000 is loaded you
should set them to Automatic instead. You may verify this by
checking the Status tab in the Services Utility in
Administrative Tools.