if you don't have any accounts on Windows Mail, it will show account creation wizard. otherwise please select Settings icon on bottom left and choose "Manage accounts" on there, pick Add account and follow
At this point, you will see this window, select "Advanced setup".
Now, select "Internet email"
Fill the information as needed: fill on "Email address" and "Username" with your email address. put your password on "Password" section, and set Account name as desired. set "Incoming email server" as imap.ircnow.org, and "Outgoing "SMTP" email server" as smtp.ircnow.org
choose "Account type" as IMAP4
enable SSL on incoming and outgoing email, "Use the same user name and password for sending mail" and "Outgoing server requires authentication"
and you are done!