You have provided far too little information for anyone here to solve your
problem. This much we can tell you:
1. You are confusing the autocompletion cache with your Contacts data. The
two are not related.
2. You also appear to be confusing your "contact list" (who knows what you
mean by that?) with your Contacts Folder. I suspect by "contact list" you
are referring to what you see in the Outlook Address Book, but that is only
a guess because you have not told us what you mean by that term.
3. Why you cannot open your PST file remains a complete mystery to us. Why
can't you and what happens when you try? What makes you think your file is
not already open? If you examine your Contacts Folder in Outlook, what do
you see?

Your problems will be easy to solve if you post more accurate and more
complete information.
--
Russ Valentine
[MVP-Outlook]
"Sandy" wrote in message
...
I have had to reinstall Outlook 2003 after a system recovery. It has the
old
contact list in there somewhere because when I type a letter in the to:
box
when creating new mail, the rest of the address pops up. But when I try
to
look at the contact list itself, it says there are no contacts in the
folder.
I have located the .pst file on my computer - it has 23 MB of data - but I
cannot open it. Help! Thanks.