How to Merge Archive PST Files - Version 3.0 How to merge archive PST files is another common query of the user. If you are using PST Merge solution to merge multiple PST files in Outlook then same solution is applicable to merge archive PST files as well. How to merge archive PST files together at once can be well explained and performed through this software. If you get PST software to merge archive PST files in Outlook, it will help you in performing many other activities as well.If you have Outlook 2000 version archive PST files in Outlook and now using Outlook 2003, 2007 version and you want to know how to merge archive PST files together into one archive PST file of Outlook, so, in that condition you can merge Outlook 2000 archive PST files into Outlook 2003 version with PST merge software. Archive files are simpler as PST file but saved to a separate location. There are very few utilities which allow performing PST merge a task, so, opt for PST merge software to merge archive PST files in Outlook together.Just check the ability of the application with the