To export OST to PST, you are advised to install Kernel for OST to PST. For perfect installation of Kernel for OST to PST, user system requires Pentium class processor, minimum 64 MB RAM, 50 MB space for software installations and some space to save results. Kernel for OST to PST supports wide (all versions) range of required softwares like MS Exchange Server, MS Outlook, Outlook Express, Windows OS and Windows Server.