Thread: Services from LocalHost

While trying to get a list of services from localhost...

An unhandled exception of type 'System.Management.ManagementException' occurred in system.management.dll

Additional information: Invalid namespace

I have the System.Management reference,
I have also imported the namespace.

The query is:
strQuery = "SELECT * FROM Win32_Service"

//setup
query = new ManagementObjectSearcher(ms, oq);

//This line generates the error
queryCollection = query.Get();

Ideas?