A question appeared on the internal forums the other day which intrigued me a little bit.. Essentially someone was asking (on behalf of a customer) if there was a server side way of making auto-preview or the preview-pane to appear for all users in Archive Explorer.
The short answer to that is no.
The information is not stored on the server, at least as far as I can tell.
It is stored in a cookie though. Mine is shown below :
C:Usersrobert_wilcoxAppDataLocalMicrosoftWindowsTemporary Internet Files