Yahoo! Messenger offers a simple method to move the archive from a computer to other computer .
The first step: You need to close Yahoo Messenger.
Second step( For Windows Xp):
You need to go to C:\Program Files\Yahoo\Messenger\Profiles. Here you will find folders for each id that loged in you Yahoo Messenger.
Third Step: You must to choose the folder of your id Now. You open it and save the Archive folder to a stick or cd.
If you use Vistaor Windows 7, the path for your archive folder is: