Try and get Outlook 2007 Upgrade PST tool to know how to upgrade Outlook to 2007 PST file format. MS Outlook popularity is increasing day by day because it is very easy and user friendly email application for sending and receiving email messages and user can work offline. But old version of Outlook (Outlook 97, 2000, 2002) uses ANSI PST files for storing Outlook metadata and ANSI PST file has one big disadvantage that is user can't store more than 2GB data in ANSI PST file. But latest or newer version of Outlook has one more advantage that is user can store unlimited data (emails/contacts) in Unicode PST file. You can rid of Outlook corruption with SysTools PST Upgrade software. Upgrade Microsoft Outlook PST tool allows users to convert ANSI (MS Outlook 2000/2002/XP) to Unicode PST (MS Outlook 2003/2007). You can upgrade PST emails to New Outlook, upgrade PST calendars and upgrade PST contact list to Unicode PST. In addition, you can use Upgrade PST tool for degrading Outlook PST files. Our Software also provides a demo version which allows users to convert only first 3 folders of Outlook PST files. If you are totally agree or satisfied with Upgrade Outlook to 2007 PST tool then you can purchase full version at very low price i.e. $49 (personal license cost for single user only).