MSNexport is a command line tool to export your old MSN history files (XML) to an easy to read format (PDF).
Install using pip:
$ pip install msnexport
To use MSNexport, all you have to do is the following command:
$ msnexport INPUT_FILE_PATH OUTPUT_FILE_PATH
Example:
$ msnexport john_cena753233637775.xml myConvoWithJohn.pdf
MSN history files are usually found on the following path:
C:\Documents and Settings\%USERNAME%\Documents\My received files\
In this folder, there should be a folder for each MSN account used on the computer. These folders contain your history files (1 file per contact).