ghhoyl

I have Windows XP Pro/Outlook 2003 SP2 on my laptop. I wanted to have the same PST file on my laptop as my desktop so I did the following: On the laptop I changed the name of the PST file Copied the PST file on my desktop to the laptop Turned on Outlook Now I have two current files both identical in Outlook A new email shows up in both I am unable to erase either one What happened and what do I do to only have one show up?