To convert Outlook 2003 to Outlook 2000, you can pick
some genuine PST Conversion tool like SysTools PST
Upgrade software. Software can be used as both PST
Upgrade and PST Degrade tool. You can Convert ANSI PST
to Unicode PST and Unicode PST to ANSI PST. ANSI is
the old version of Outlook like Outlook 97,
Outlook2000, Outlook 2002 and Unicode is the upgrade
versions of Outlook like Outlook 2003, Outlook 2007 and
Outlook 2010. Open your Unicode PST file with error
"Properties for this information service must be
defined prior to use" to ANSI PST file. For every
conversion, PST Upgrade creates a new PST that is a
replica, folder by folder, of an existing one. It makes
no changes to the original PST file. ANSI Outlook PST
file contains 2GB limitation and Unicode contains 20GB
limitation. And you can extent your PST file size with
this tool. PST Conversion Software just converts
Unicode PST File to ANSI PST file and creates a new PST
file. PST Degrade Tool software allows users to upgrade
ANSI PST to Unicode PST and degrade Unicode PST to ANSI
PST. PST Downgrade Tool supports to converts all the
mail folders like Inbox, Outbox, Sent Items, Drafts,
Deleted Items and Contacts of Unicode PST File to ANSI
PST file. Software require a valid configured profile
of MS Outlook 2003 & 2007 installed. SysTools PST
Upgrade tool successfully runs with Window
XP/2000/2003/Vista/7 Operating System. You can use Demo
version of PST Upgrade software which is free of cost
and upgrades the first three folders so that you can
evaluate the efficiency of the tool. After full
satisfaction you can purchase full license of this
software only at $49 that is very affordable price to
convert your PST files. Our support team always ready
to solve your problem or any technical issues.

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