Which mail account type are you using?
Note that your method to set a different pst-file as the delivery location
is flawed. Never rename a pst-file and then point Outlook to a different
pst-file when it nags for a location. This is a great way to corrupt your
mail profile. Use File-> Open-> Outlook Data File... instead. Then use
Tools-> Accounts... (or Email Accounts, or Services, or... depending on your
version and possible mail mode of Outlook) to set it as the default delivery
location.
Scripting mail profile configurations for accounts other than Exchange and
with pst-file delivery in general requires you to use 3rd party tools.

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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
-----
> Hi all,
> many users have to work on the same PC (shift work). I'd need get all new
[quoted text clipped - 16 lines]
> Sorry for my not very clear english. I hope the sense is clear, at least.
> Nicola M.
Nicola M - 13 Mar 2008 11:31 GMT
> Which mail account type are you using?
Mail internet only (not workgroup configuration)
> Note that your method to set a different pst-file as the delivery location
> is flawed. Never rename a pst-file and then point Outlook to a different
[quoted text clipped - 3 lines]
> version and possible mail mode of Outlook) to set it as the default delivery
> location.
I yet follow your advice on Outlook XP and 2003 only, because i haven't
never found this feature on Outlook 2000.
> Scripting mail profile configurations for accounts other than Exchange and
> with pst-file delivery in general requires you to use 3rd party tools.
Thanks a lot for the answer. Sorry for my feedback delay...
Nicola M.
> > Hi all,
> > many users have to work on the same PC (shift work). I'd need get all new
[quoted text clipped - 16 lines]
> > Sorry for my not very clear english. I hope the sense is clear, at least.
> > Nicola M.
You can create a *.prf file to set the location when they log on.
http://www.outlook-tips.net/howto/prf.htm
http://www.outlook-tips.net/howto/prf_stores.htm

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Diane Poremsky [MVP - Outlook]
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** Please include your Outlook version, Account type, and Windows Version
when requesting assistance **
> Hi all,
> many users have to work on the same PC (shift work). I'd need get all new
[quoted text clipped - 16 lines]
> Sorry for my not very clear english. I hope the sense is clear, at least.
> Nicola M.
Nicola M - 13 Mar 2008 11:36 GMT
Thank you very much for help.
each version of Outlook (2000,XP,2003) runs on W2K SP4 ITA and on a few XP
SP2 ITA client.
Account type is "mail internet only" (i don't know the exact label text on
English version so I translated from Italian).
Sorry for my delay in feedback
Nicola M.
> You can create a *.prf file to set the location when they log on.
>
[quoted text clipped - 21 lines]
> > Sorry for my not very clear english. I hope the sense is clear, at least.
> > Nicola M.
Brian Tillman - 13 Mar 2008 18:50 GMT
> each version of Outlook (2000,XP,2003) runs on W2K SP4 ITA and on a
> few XP SP2 ITA client.
> Account type is "mail internet only" (i don't know the exact label
> text on English version so I translated from Italian).
Outlook 2000 Internet Mail Only mode doesn't allow you to create a new mail
profile via the Control Panel applet. You need to mess with the Registry.
If you're comfortable doing that, post back and we can direct you to the
instructions.

Signature
Brian Tillman [MVP-Outlook]
Nicola M - 14 Mar 2008 10:19 GMT
Here my post back answer.
I wait for suggestions.
PS.
if Getting what I asked in the first post of this thread need to change
account type from Internet Mail Only to Workgroup there's no problem. I can
do this. The important is that all new users on that PC, at their first
logon, automatically use the existent profile.
Nicola M.
> > each version of Outlook (2000,XP,2003) runs on W2K SP4 ITA and on a
> > few XP SP2 ITA client.
[quoted text clipped - 5 lines]
> If you're comfortable doing that, post back and we can direct you to the
> instructions.
Brian Tillman - 14 Mar 2008 20:15 GMT
> if Getting what I asked in the first post of this thread need to
> change account type from Internet Mail Only to Workgroup there's no
> problem. I can do this. The important is that all new users on that
> PC, at their first logon, automatically use the existent profile.
I think using Corporate/Workgroup mode in Outlook 2000 is good idea, unless
you need to access an IMAP account, in which case Internet Mail Pnly mode is
your only choice. CW mode can't access IMAP.
Each person should have his or her OWN mail profile and his or her OWN
Windows login. My opinion is that it's a mistake for everyone to use the
same WIndows user.

Signature
Brian Tillman [MVP-Outlook]
Nicola M - 17 Mar 2008 09:00 GMT
Thank you for your interesting , Brian
> > if Getting what I asked in the first post of this thread need to
> > change account type from Internet Mail Only to Workgroup there's no
[quoted text clipped - 8 lines]
> Windows login. My opinion is that it's a mistake for everyone to use the
> same WIndows user.
Yes, there's a mistake. Each person who login to this PC has his/her own
windows login and different, personalized work environement. I forced outlook
to get that all' users using the same *.pst only. I know this isn't a good
practice but is the unique way I have found to solve my problem. All user
have to check/read the same mail recipient address and the messages have to
stay togheter in a single .pst. Users are lazy and not very "nerds" else I
could them advice about saving messages on a shared system folder. We try
this way but a lot of problem have been arisen: missing messages, wrong
saving formats, deleting messages an so on...
I think I'll maintain this status quo (until it works)...
Thanks again
Nicola M.