ConnectionOptions connectOptions = new ConnectionOptions();
    connectOptions.Username = "Administrator";
    connectOptions.Password = "TopSecret";
    ManagementScope scope = new ManagementScope(
        @"\" + machine + @"rootcimv2",
        connectOptions);

    scope.Connect();
    ManagementPath path = new ManagementPath(@"Win32_Process");
    ManagementClass proc = new ManagementClass(scope, path, new ObjectGetOptions());
    ManagementBaseObject args = proc.GetMethodParameters("Create");
    args["CommandLine"] = "C:\Windows\notepad.exe";
    proc.InvokeMethod("Create", args, null);