>>Michel one thing about expires is the following if you are in diferent time zones then you can have a problem since what IIS is doing is putting a datetime for validation of the page so what is 5 minutes to the server can be several hours and five minutes to the client.
>>I hope that this explanation will help you if not and don't know what else I can tell you.
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>Ok, I did successfully accomplished it.
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>It took me a while to figure how to do it. I haven't found any direct way in WWC to do it. So, I did it manually.
>

You can use the WWWC header object to insert a no-cache header in your original response:

oHTTPHeader.AddHeader("Pragma", "no-cache")

The first time this URL is hit, the client sees the no-cache header, and does not stow the response in the cache.