I am looking for a reliable way to add a host header alias to a IIS 6.0 web site. 

Basically the batch file I want could take the form...

ADDHOST existing_site_name new_host_header new_port

Note that I do not think that the IISWEB script can do this - it can
only create an entirely new website, not add a header to an existing
site.

Also note that you can potentially do this with the adsutil.vbs
script. You would need to first do a GET to list all the existing host
headers on the existing site, and then do a SET to set all the
existing ones PLUS the new one you want to add. I can not figure out a
good/reliable way to do this, nor can I figure out how to do an
ADSUTIL SET that would append
a value to the list rather than overwriting the whole list with the new
value.

thanks.

adsutil.vbs just doin great!

But still I found an error. When I put the same alias host header, the
site will stop.

I still looking for function to query the host header.

I ended up solving this myself. Check out...

http://josh.com/IIS/index.htm