The MSN Messenger History Merging tool was designed for merging the xml history files of the MSN Messenger and the Windows Live Messenger.
This is useful when using multiple machines running the Messenger (e.g., office and home) with the history logging turned on. In this scenario, each machine has its own copy of the history files; each copy corresponds to the same recipients but in different times. This utility will look for history files of the same recipient in two different folders and create a merged version of the history file for every recipient found. Requires the .Net v2 framework (not included).