Do you have Windows set to show extensions?
Control Panel-> Folder Options-> tab View
If you are sure this should be a pst-file but you somehow created it with
the wrong extension, then you can rename it and connect to it in Outlook.
--
Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
http://www.howto-outlook.com/
Outlook FAQ, HowTo, Downloads, Add-Ins and more
http://www.msoutlook.info/
Real World Questions, Real World Answers
-----
"Designermom_" <(E-Mail Removed)> wrote in message
news:B99C00DD-963B-4A0E-AE76-(E-Mail Removed)...
>
> It says that the it is an 09 File and doesn't list the extension.
>
> "Roady [MVP]" wrote:
>
>> What is the extension of the file? Is it .pst?
>> You don't open the file 'with' Outlook but 'within' Outlook;
>> File-> Open-> Outlook Data File...
>>
>> --
>> Robert Sparnaaij [MVP-Outlook]
>> Coauthor, Configuring Microsoft Outlook 2003
>> http://www.howto-outlook.com/
>> Outlook FAQ, HowTo, Downloads, Add-Ins and more
>>
>> http://www.msoutlook.info/
>> Real World Questions, Real World Answers
>>
>> -----
>>
>> "Designermom_" <Designermom_@discussions.microsoft.com> wrote in message
>> news:FDDBBAF9-ACE4-4893-A5E1-(E-Mail Removed)...
>> > I archived my entire Personal Folder to my external harddrive (done
>> > this
>> > before) but this time Outlook didn't archive it as an office data file.
>> > Under "properties" is says that the file is "Microsoft Outlook". I
>> > tried
>> > to
>> > open it with Outlook and get the error message "The command line
>> > argument
>> > is
>> > not valid. Verify the switch you are using". How do I convert this to
>> > an
>> > "office data file"?
>>
>>
>