Permissions To Start A Service

Hi.

I'm developing a project where I'm looking after a service: Smart Card.

I'm checking if it is closed. If it is closed then I'm checking if it is Disabled. If it is Disabled then I'm changing its status to Automatic and I'm starting the service. If the service is closed but the status is disabled I'm just open it.



The problem is that on my computer everything is working good, but when I'm trying to use it on other computer, if the service is disabled then everything is fine, but for example if the service is automatic and closed then I'm trying to start it, but I
receive the error which is telling that I don't have permissions.



My questions are:

1.How it is possible to have permissions to change the status from disable to auto and to start the service, but not to start it if the status is already automatic?

2. How can I give the permissions just for that using the code?



Here is the code what I'm using:



Dim controller As New ServiceController("SCardSvr")



If controller.Status.Equals(ServiceControllerStatus.Stopped) Then

'' getServicesForDomainComputer(Environment.MachineName.ToString())

'' EnsureTransactionManagerStarted(False)



Dim obj As ManagementObject

Dim inParams, outParams As ManagementBaseObject

Dim Result As Integer





obj = New ManagementObject("\.
ootcimv2:Win32_Service.Name='SCardSvr'")



'Change the Start Mode to Automatic



If obj("StartMode").ToString = "Disabled" Then

'Get an input parameters object for this method

inParams = obj.GetMethodParameters("ChangeStartMode")

inParams("StartMode") = "Automatic"



'do it!

outParams = obj.InvokeMethod("ChangeStartMode", inParams, Nothing)

Result = Convert.ToInt32(outParams("returnValue"))



If Result <> 0 Then

Throw New Exception("ChangeStartMode method error code " & Result)

End If

End If



controller.Start()

End If