Need to convert old PST files? Looking for a best PST Conversion tool? or need to convert Outlook PST files? Your search for best PST Conversion utility ends here. PSTUPGARDE is a PST Conversion tool to convert PST files of MS Outlook. Using PST Conversion tool users can upgrade ANSI PST files to Unicode PST files and convert Unicode PST file to PST file. If you need to convert your old PST file created in Outlook 2000/2002/XP to a new PST file of Outlook 2003/2007, try using PST Conversion tool to convert PST file quickly & easily. In MS Outlook 2003/2007 creates PST file with a file size limit of 20 GB. ANSI PST files created in MS Outlook 2000/2002/XP has the overall size limit of 2 GB. Just to avoid corruption due to exceeding the size limit of 2 GB imposed on ANSI PST file, you need to convert your ANSI PST file to Unicode PST file to enhance the file size limit to 20 GB. Just to avoid corruption PST files against imposed due to 2 GB limitation placed in ANSI PST file. PST Conversion software successfully converts Outlook 2000 to Outlook 2003. PST Converter Software convert all email folders such as Inbox, Outbox, Deleted Items, and Sent Items etc to a new PST file. PST Upgrade software perform conversion of ANSI PST to Unicode PST and Conversion of Unicode PST to ANSI PST. PST Conversion Software Software converts ANSI PST file showing "Properties for this information service must be defined prior to use" to Unicode PST file quickly and easily. SysTools PST Upgrade tool successfully runs with Windows Windows XP/2000/2003/Vista Operating System.