ASelect Tools > then Account Settings > Email tab. Select Microsoft Exchange, POP3, IMAP, or HTTP. Then enter your yahoo email address and mail server information assigned by the yahoo provider.
BClick Tools > Options > Accounts > Add Account > Mail. Then, enter email address and mail server information assigned by the yahoo provider.
CClick Tools > Address Books > Accounts >Add Account > Mail. Then, enter e-mail address and mail server information assigned by the yahoo provider.
DClick Tools > Send and Receive Accounts > Add Account > Mail. Then, enter e-mail address and mail server information assigned by the yahoo provider.