The most capable tool for OST to PST Conversion is OST to PST Converter. it can covnert every bit of OST data in bulk into PST format. This software provides a platform for OST fie migrate for non-technical users. Each bit of data remails as the orignal copy after conversion. It is suitable for all verion of MS Outlook and Windows. A free trail version is available for free : http://www.osttopst.adwages.com/