Using more effective & feature rich conversion method to convert .pst files format that can be easily Change Outlook PST Format or move PST file to new computer. The PST Conversion software allows users to convert ANSI PST (MS Outlook 2000/2002/XP) to Unicode PST (MS Outlook 2003/2007) with all the mail folders like Inbox, Outbox, Sent Items, Drafts, Deleted Items, Contacts etc and this utility maintain all of its email metadata information (to, from, cc, bcc, sent/receive date & time, attachments etc). SysTools PST Upgrade software converts ANSI PST to Unicode PST and Unicode PST to ANSI PST. Software perform PST conversion in just three to four steps. PST Upgrade Tool perform PST conversion in two ways as shown under: 1) Convert Outlook ANSI PST to Outlook Unicode PST 2) Convert Outlook Unicode PST to Outlook ANSI PST SysTools PST Upgrade software helps you to convert old PST to new PST or change outlook pst format. You can use this software to upgrade Outlook PST files and even to downgrade PST files. Suppose you have created your PST file in Microsoft Outlook 2003 & 2007 and you want to open it in Outlook 2002 or in its earlier version and getting error such as "Properties for this information service must be defined prior to use", you can erase this error very easily by using for PST Converter tool. For a better assessment of the software check out on the demo version of PST Upgrade software that is available online for free of cost. After getting fully comfortable buy the licensed version of change PST to Unicode at $49.