Running Outlook 2010 on Windows 7
I have two quite large outlook files each about 700MB each. I need regularly to access the emails in them, they are archives from recent years. However each time I open them, the date (and maybe something internally in the file) gets updated, this means that my backup software tries to back them up again during an incremental backup. I would like to open the PST files read-only (and of course for indexing searching too) so that the dates and the files are not changed. I don't really want to exclude them from backups, as I would like them in the full backup.
If I set the file to be read-only on the filesystem then outlook refuses to open it.
So to summarize the question again. How can I force outlook 2010 to open some PST files read only so they are available for reading, indexing and searching, but don't get changed.