You can't transfer messages unless you forward them individually.
I presume you are talking about the webmail version of Yahoo Mail?
Yahoo also offers POP access for a small fee:
http://help.yahoo.com/l/us/yahoo/mail/classic/mailplus/overview
Contacts can be transferred by exporting them from Windows Mail
(File, Export, Windows Contacts, CSV) then importing that CSV file into Yahoo Mail.
Gary VanderMolen, Microsoft MVP (Mail)
"des" wrote in message
pls advise how to I export my inbox, sent box, contacts from windows mail to
yahoo mail ?