Monitoring HTTP on a Windows server



I am trying to monitor HTTP on a windows server and I am getting this error in the services display:
HTTP WARNING: HTTP/1.1 404 Object Not Found

I am using the check_http command:
‘check_http’ command definition
define command{
command_name check_http
command_line $USER1$/check_http -I $HOSTADDRESS$ $ARG1$

It works on all of the Linux servers. Is there something I am missing or something that needs to be done on the Windows server? It is monitoring other things on the serer OK. Like Ping, CPU, Memory, Hard drive, etc…


paste your service definition as well