how to transfer/copy putty settings from a computer to another

A very good article : http://downloadsquad.switched.com/2007/02/01/howto-transfer-your-putty-settings-between-computers/


Pay attention to the fact you must export only the branch :  [HKEY_CURRENT_USER\Software\SimonTatham . You can encounter the error : error accessing the registry if you exported a branch that does not exist in you new computer machine