Using WMI to Manage SQL Server 2000 Services

There are quite a few blog posts out there to manage SQL Server 2005 services using the :\\.\root\Microsoft\SqlServer\ComputerManagement
However, WMI Admin Provider is not pre-installed for SQL Server 2000. It needs to be installed separately using the WMI Admin Provider Setup available along with the SQL Server 2000 Setup CD under x86\other\wmi folder. 

Sample script to change SQL Server 2005 service startup account and password using WMI:
MSDN Documentation on Win32_Service class 

Sample Script to change a SQL Server 2000 instance startup account using root\MicrosoftSQLServer namespace: 

strComputer = "." 

Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\MicrosoftSQLServer") 

' Obtain an instance of the the class 

' using a key property value. 

Set objShare = objWMIService.Get("Win32_Service.Name='MSSQL$SQL2000'") 

' Obtain an InParameters object specific 

' to the method. 

Set objInParam = objShare.Methods_("Change"). _ inParameters.SpawnInstance_() 

' Add the input parameters. 

objInParam.Properties_.Item("StartName") = "LocalSystem" 

objInParam.Properties_.Item("StartPassword") = "" 

' Execute the method and obtain the return status. 

' The OutParameters object in objOutParams 

' is created by the provider. 

Set objOutParams = objWMIService.ExecMethod("Win32_Service.Name='MSSQL$SQL2000'", "Change", objInParam) 

' List OutParams 

Wscript.Echo "Out Parameters: "Wscript.echo "ReturnValue: " & objOutParams.ReturnValue