I have some Outlook PST files stored on my network and they open just fine from any machine on my network. I needed to burn these files to a CD for portability reasons. When I try to open these files on another machine I am getting permission issues. Of course I know you can not open the files directly from the CD because Outlook needs write access to the file to open it.. So what I have done is copy the PST file to the desktop and then open it from there. On a box running XP pro adn Outlook 2003 the file opens just fine. However on a box running W2k pro and Outlook 2003 the file will not open and is giving a " You do not have permission to open this file" dialog. I have checked the security permissions on the file and adjusted them if needed usually does not need adjusting. I have played with the ownership of the file still no joy. I need to make sure these files can open on either OS platform. Anyone have any ideas?