After pushing some registry tweaks via GPO, it turned out I needed to restart the service on every host.  Rebooting and/or logging into each host was not a convenient option.  I figured there must be a way to do it.  This is the solution I came up...

Requirements

• Download the PSTools from SysInternals to get the "psservice.exe" tool.
• You are running an Windows AD domain, logged in as an Administrator when executing.

What It Does...

Uses the "net view" command to get a list of available servers.  Then the "psservice" command is used to connect to each system and execute the action for the service specified.  It also creates a log file in C:\TEMP

Usage:  <filename.bat> <servicename> <action>

<servicename> = The name of the serivce as it appears in the properties of the Services Control Panel.

<action> = any action that is supported by psservice (see "psserivce /?")

My Batch Script

@echo off  
REM Created by MWalker@Techadre.com - 20090402  
REM -- initialize global variables -- 
set Tnow=0 
set Today=0 
set DEBUG=1 
set Service=%1 
set Action=%2 
set Server=0  
REM *** DISCLAIMER *** 
echo Are you sure you %Action% %Sevice% on ALL servers? CTRL-C now to bail.  
pause  
REM *** Pre-Execution Stuff ***
for /f "tokens=1,2,3 delims=,-/" %%a in ("%date:~4%") do set Today=%%c%%a%%b
set Tnow=%time::=%
set logfile=C:\temp\service_restart_script_%Today%-%Tnow%.log
echo Logfile for this script is... %logfile%

REM *** Cleanup Old List File ***
if exist "C:\TEMP\SERVER.LIST" (
    ECHO *** DEBUG *** Deleting Old SERVER.LIST file >> %logfile%
    del /F "C:\TEMP\SERVER.LIST"
)

REM *** Create the Server List ***
IF %DEBUG% EQU 1 net view |find "\\" >> C:\TEMP\SERVER.LIST.%Today%-%Tnow%
ECHO - Getting Server List >>%logfile%
net view |find "\\" >> C:\TEMP\SERVER.LIST

REM *** For Each Server Listed, Do Something ***
ECHO - Starting process at %Today%-%Tnow% >> %logfile%
for /f "tokens=1 delims= " %%i in (SERVER.LIST) do (
    IF %DEBUG% EQU 1 ECHO *** DEBUG *** Processing %%i
    ECHO - Processing "%%i" >>%logfile%
    IF %DEBUG% EQU 1 ECHO *** DEBUG *** Executing - psservice %%i %Action% %Service% >>%logfile%
    psservice %%i %Action% %Service%
)
ECHO - Ending process at %Today%-%Tnow% >> %logfile% 

Modifications

An idea for tweaking this script would be to add more command line options to pass server names or patterns to be found in names.  For example if you have a server name convention for SQL servers that use "sql" in the servername, you could restart a service on only SQL servers.

Also one could right a more complex script to issue commands and track the status and report if any server fails to restart correctly.  Feel free to comment and submit your ideas and tweaks.