ANSI to Unicode Conversion - Convert ANSI to Unicode PST files with the help of PST Upgrade software, this PST conversion utility helps you to upgrade Outlook personal folder from ANSI to Unicode. ANSI to Unicode conversion is very important and easy for Outlook users you can easily convert Outlook PST files from ANSI to Unicode. This ANSI PST to Unicode PST conversion helps you to open Outlook mailboxes (PST) into newer Outlook applications (Outlook 2003, Outlook 2007, and Outlook 2010). ANSI PST exists in old version of Outlook like Outlook 97, Outlook 2000, Outlook2002 and Unicode PST exists in latest version of Outlook like Outlook 2003, Outlook 2007 and Outlook 2010. ANSI formats of Outlook PST poses 2GB limitation and Unicode formats of Outlook PST poses 20 GB limitation. SysTools PST Upgrade compatible with all window versions. You can easily convert Outlook PST 97, 2000 and 2002 PST version into Outlook PST 2003 and 2007 versions. If Outlook ANSI PST crosses the limit of 2GB then your PST will become corrupt. This utility is also able to degrade you PST file format. Free evaluation copy is available for evaluation of software, you can purchase full license version only at 49 USD.