Convert Outlook 2000 to Outlook 2003 - Version 3.0 Convert ANSI PST to UNICODE PST and UNICODE PST to ANSIPST by using SysTools PST Upgrade Tool. If there is aneed of conversion of UNICODE PST to ANSI PST or viceversa. SysTools PST Upgrade Tool is capable ofconversion UNICODE PST to ANSI PST. Microsoft Outlook2003 and Microsoft Outlook 2007 have a larger overallsize limit 20 gigabytes (GB) for the personal folders(.pst) file than the .pst files that are in the earlierversions of Microsoft Outlook such as Microsoft Outlook2000 & XP. In Outlook 2002 and earlier, the .pst filesare in the American National Standards Institute (ANSI)format, and the overall size has a limit of 2 gigabytes(GB) only. Unicode PST file has the overall size limitof 20 GB. Just to avoid corruption due to exceeding thesize limit of 2 GB imposed on ANSI PST file, you needto convert your ANSI PST file to Unicode PST file toenhance the size limit to 20 GB. PST Conversion Tool isincapable to perform its role for corrupted PST files.Convert Outlook 2000 to Outlook 2003 using PSTConversion Tool. Suppose you have created your PST filein Microsoft Outlook 2003 & 2007 and you want to openit in Outlook 2002 and in its earlier version. Outlook2000/2002 will not allow you to open the PST file andresults in error as "Properties for this informationservice must be defined prior to use". To open theUnicode PST files in Outlook 2000/2002, you need todowngrade or convert the Unicode PST to ANSI PST fileusing PSTUPGRADE. While converting Outlook 2000 toOutlook 2003 you must have Microsoft Outlook 2003 &2007 installed with a valid configured profile. Openyour Outlook 2000 PST files in Outlook 2003 withOutlook 2000 to Outlook 2003 converter Software.Software runs smoothly in Windows XP/2000/2003/VistaOperating System.