multiple Host headers single IP IIS6

Hi, not an expert by any stretch of the imagination

but I have few web sites and a single IP

each of these has had internal and external DNS set to the Single Ip address nats to

i was under the impression host headers could reroute as it were the request as it came in

but its not working

any help greatly apprciated

error wise

i get web site declined to show you page  or our main default website.
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Evan CutlerVolunteer Chief Information OfficerCommented:
Try this.
I believe its a matter of putting the right data into the right blocks.

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brwwigginsIT ManagerCommented:
When the site declines to show you a page it usually means an authentication failure
mhamerAuthor Commented:
Sorry guys although im not an expert it is a bit more complicated than i put in my question

its an NLB cluster
DNS is hosted externaly     (i think its more likley here wher ethe issue is)
aftera little change thanks to the link from arcee123  it works as expected in ternally  (choosing all unassigned rather than the new ip address)

mhamerAuthor Commented:
the host was redirecting to our site rather than going to an a record so host header lost   changed that and all is well thanks
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Microsoft IIS Web Server

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