To set up a Windows Live Hotmail account in Mac OS X Mail follow the following steps:
From the MAC OSX menu:
Select Mail > Preferences
Go to the Accounts category.
Click the + ("Create an account.") button.
Enter your name under Full Name.
Email Address: Type your Windows Live Hotmail address "yourusername@hotmail.com"
Password:Type your Windows Live Hotmail password
Click Continue.
Account Type:POP
Enter "Windows Live Hotmail" (or something similar) as the Description: for this account.
Incoming Mail Server:"pop3.live.com" (not including the quotation marks)
User Name:"yourusername@hotmail.com"
Click Continue.
Outgoing Mail Server Description: Windows Live SMTP.
Outgoing Mail Server:"smtp.live.com"
Use Authentication: Yes
User Name: "yourusername@hotmail.com"
Password: Type your Windows Live Hotmail password
Click Continue.
Now click Create.
Close the Accounts window.
Then you should be able to access successfully your Hotmail through MAC OS X Mail client.