VBS Script (template) not Polling Remote Computer Correcty

I created a script to poll a server's uptime in minutes using VBS and WMI. The problem seems to be the strComputer = "." command it ends up polling the Opmanager server's uptime. If I put the device variable or the specific server name it throws errors errors like: Microsoft VBScript runtime error: Permission denied: 'GetObject' (on a w2003 machine) , (null): 0x80041003 (on W2008 or w2000).

The command line is: cscript //nologo ${FileName}.vbs ${DeviceName} ${UserName} ${Password} svchost.exe

the body:

strComputer = "."
Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2")
Set colOperatingSystems = objWMIService.ExecQuery _
    ("Select * from Win32_OperatingSystem")

For Each objOS in colOperatingSystems
    dtmBootup = objOS.LastBootUpTime
    dtmLastBootupTime = WMIDateStringToDate(dtmBootup)
    dtmSystemUptime = DateDiff("n", dtmLastBootUpTime, Now)
    Wscript.Echo "Message: System Uptime Alarm"
    Wscript.Echo "Data:"
    Wscript.Echo "Uptime"&vbTab& dtmSystemUptime
    WScript.Quit(0)
Next

Function WMIDateStringToDate(dtmBootup)
    WMIDateStringToDate = CDate(Mid(dtmBootup, 5, 2) & "/" & _
        Mid(dtmBootup, 7, 2) & "/" & Left(dtmBootup, 4) _
            & " " & Mid (dtmBootup, 9, 2) & ":" & _
                Mid(dtmBootup, 11, 2) & ":" & Mid(dtmBootup,13, 2))
End Function