PST Upgrade is powerful software for converting Outlook 2003 to Outlook 2000. PST File Conversion tool quickly import Unicode PST file into ANSI PST file. 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. PST Conversion Software just convert Unicode PST File to ANSI PST file and creates a new PST file. Software can be used as both PST Degrade tool PST Upgrade Tool. PST Degrade Tool software allow 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, 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 Windows Windows XP/2000/2003/Vista Operating System. You can use Demo version of this software which is free of cost if you fell satisfaction then you purchase full license of this software.