Try restoring the file to an alternate location on the clients harddisk.
Once you have the file restored you can copy it to the proper location. Make sure Outlook isn't running as it will lock the current .pst file as "in use".
- Theo.
Btw: The documented way to restore a client after a disk crash is using the "Client Restore CD".
This will restore a backup of the failed disk to the replacement disk. No need to restore single files.
No home server like Home Server