I am trying to control a Windows Service via a Web Service interface.
(I am developing in .NET2003)  I am using the ServiceController object
which allows me to read the state of the services with no problems.  
However, I am not able to start or stop the service unless I go
through the process of impersonating an administrative user.  (See
MSDN  KB 306158)

Since it appears to be a privilege issue, I set the folders in IIS
holding the Web Service files to Anonymous Access with the privileges
of the administrative user that I was able to impersonate.  This did
not work.

Does anybody have any ideas as to how I need to set the security of
the Web service such that I can get rid of the impersonation code in
my application?

Thanks
Doug

WORKS:
String __gc* streamAccessClass::turnStreamOn()
{
ServiceController * streamCtl  = new ServiceController();
streamCtl->ServiceName = "newserviceWinService";

if(streamCtl->get_Status() == ServiceControllerStatus::Stopped
  || streamCtl->get_Status() == ServiceControllerStatus::Paused)
{
 cImpersonation * user = new cImpersonation();
 try
 {
  if(user->impersonateValidUser(S"IISTEST", S"BaileyD", S"IISTEST"))
  {
   streamCtl->Start();
   streamCtl->WaitForStatus (ServiceControllerStatus::Running);
   user->undoImpersonation();
   return S"Streamer is On";
  }
  else
  {
   return S"Could not log on";
  }
 }
 catch (Exception * startErr)
 {
  user->undoImpersonation();
  return startErr->get_Message();
 }
} return S"Streamer failed due to improper state";
}

bool cImpersonation::impersonateValidUser(String * userName, String *
domain, String * password)
{

WindowsIdentity * tempWindowsIdentity;
IntPtr token = IntPtr(0);
IntPtr tokenDuplicate = IntPtr(0);

if(RevertToSelf())
{
 if(LogonUserA(userName, domain, password, LOGON32_LOGON_INTERACTIVE,
  LOGON32_PROVIDER_DEFAULT, token) != 0)
 {
  if(DuplicateToken(token, 2, tokenDuplicate) != 0)
  {
   tempWindowsIdentity = new WindowsIdentity(tokenDuplicate);
   impersonationContext = tempWindowsIdentity->Impersonate();
   if (impersonationContext != 0)
   {
    CloseHandle(token);
    CloseHandle(tokenDuplicate);
    return true;
   }
  }
 }
}
if(token!= IntPtr::Zero)
 CloseHandle(token);
if(tokenDuplicate!=IntPtr::Zero)
 CloseHandle(tokenDuplicate);
return false;
}

void cImpersonation::undoImpersonation()
{
if (impersonationContext != 0)
 impersonationContext->Undo();
}

DOES NOT WORK:
String __gc* streamAccessClass::turnStreamOn()
{
 
ServiceController * streamCtl  = new ServiceController();
streamCtl->ServiceName = "newserviceWinService";

if(streamCtl->get_Status() == ServiceControllerStatus::Stopped
 || streamCtl->get_Status() ==ServiceControllerStatus::Paused)
{
 try
 {
  streamCtl->Start();
  streamCtl->WaitForStatus (ServiceControllerStatus::Running);
  return S"Streamer is On";
 }
 catch (Exception * startErr)
 {
  return startErr->get_Message();
 }
} return S"Streamer failed due to improper state";
}