Upgrade Outlook PST File - Version 2.0 Query: How to upgrade Outlook PST file or how to convert ANSI file to Unicode PST? Solution: Outlook PST Upgrade tool (developed by SysTools Group) that can upgrade PST to Outlook 2007, 2003 and 2010 (32-bit) PST file format without any data risk. Upgrade Outlook PST tool easily upgrade Outlook 2002 to new Outlook as well as degrade PST files to ANSI PST file format. The major draw back with ANSI PST is the size limitation.because the ANSI PST have the size limit is only 2GB & when size is exceed then the maximum chances to lost the Outlook ANSI PST file. However in Unicode PST has the size limit is 20GB. So the ANSI PST users have the enough space to store the outlook file.The major benefit for the Unicode PST user has secured & no chances to harm his important database.It is clear that Unicode PST is preferred more then ANSI. PST Upgrade software supports to converts all the mail folders like Inbox, Outbox, Sent Items, Drafts, Deleted Items, Contacts to Unicode PST File. Software requires a valid configured profile of MS Outlook 2003 & 2007 must install on your pc. Try the free demo