CreateObject("MSXML2.XMLHTTP") to monitor servers using host header for site?

Anyone know of a way to connnect and test if a site is up that is using host headers?  They are behind a load balancer and I can't do a backdoor since there is a header?  I'm thinking there has to be a way?
 
 
Code I usually use for web farms for a site:
 
on error resume next
arraystrcomputer = array("server1","server2")
for each objcomputer in arraystrcomputer
Set objHTTP = CreateObject("MSXML2.XMLHTTP")
strurl = "http://" & objcomputer & "/qa/status/index.html"
objHTTP.Open "GET", strURL, FALSE
objHTTP.Send
  if objHTTP.statusText = "OK" then
    wscript.echo now & " Url Status " & objHTTP.statusText & " For " & strUrl
   else
     wscript.echo now & " Error Connecting to " & strurl
  end if
next

Please describe the problem you're trying to solve instead of what you perceive as the solution.

I am trying to connect to a web url on a specific server instead of using the load balancer.  There are multiple servers responding to the same website and the IIS site uses a host header so connecting by an individual server name or IP does not work.  I am looking for a way to test site up or down to each server even though they use host headers.  The code above works fine on non host headers IIS sites.  Even in IE I can't substitute the server name and get to the site. 

Unless you can bypass the load-balancer and connect directly to each individual server, I'd say you're out of luck. Load-balancers have the exact purpose of hiding the individual servers from the network.

I would be able to if the IIS sites weren't using host headers that is what is messing me up. 

Perhaps try to set the header?
.setRequestHeader "host", header
 
According to the W3C, this is not editable due to security issues but perhaps WSH/ASP doesn't comply...