1)   Convert Outlook 2003 to Outlook 2000 2.0
PST Upgrade is a utility for converting Outlook 2003 to Outlook 2000. PST File Conversion tool import Unicode PST file to ANSI PST file. If open your Unicode PST file show error "Properties than you must be defined prior to use" to ANSI PST file.

 2)   Outlook 2007 to Outlook 2000 2.0
Outlook 2007 to Outlook 2000 is a utility for converting Outlook 2007 to Outlook 2000. PST File Conversion software converts Unicode PST file to ANSI PST file. Software successfully downgrade your Outlook 2007 .pst file to 2000 in only few steps.

 3)   SysInfoTools PST Upgrade and Downgrade 4.0
PST Upgrade and downgrade from SysInfoTools is an application to upgrade or degrade MS Outlook PST files. Using this tool user can easily convert ANSI PST file to UNICODE or UNICODE PST file to ANSI PST file.