question about click once

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I haven't used it yet nor read the documentation (aheum.. :D)
however I'm planning too but wonder if:

Could I, with click once enabled application, have a notification panel
saying to the user:

-------------------
Attention please
-------------------
A new version of the application is available, would you like to download it
now?
-------------------
OK CANCEL
------------------
(followed by a nice "download progress" panel)

And control update the process from here?
or is it all hopelessly automatic....


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