lige lidt copy/paste
CacheControl Property
The CacheControl property determines whether a proxy server can cache the Active Server Page.
AddHeader Name, Value Method
The AddHeader method adds a new named HTTP header with a specific value to the response.
Expires Property
The Expires property specifies the length of time in minutes until a cached page on the browser expires.
ExpiresAbsolute Property
The ExpiresAbsolute property specifies a date and time when a cached page on the browser will expire.
Du kan laese mere om det her hvis du har lyst.
http://www.devguru.com/Technologies/asp/quickref/response.html