How can I make IIS display content length

Hi All,

When I do a post/get operation on a page a page, I would like to find out the "Content Length".

A typical server response would be like this example:
**********************
HTTP/1.1 200 OK
Date: Mon, 23 May 2005 22:38:34 GMT
Server: Apache/1.3.27 (Unix) (Red-Hat/Linux)
Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT
Etag: "3f80f-1b6-3e1cb03b"
Accept-Ranges: bytes
Content-Length: 438
Connection: close
Content-Type: text/html; charset=UTF-8
***********************
When I started testing it(on random websites on web using a coldfusion tag called cfhttp), in 9/10 cases, I was not able to see this value.

Some said that it was an IIS setting, and it turned off for security reasons.

Is this a setting in IIS and can this be turned on? Or how do I go about getting this value?

Our staging and production server is running Windows 2003 with IIS 6.

any leads or suggestions will be useful