Under Notifiers from the Project Information page, click Add.
On the Add Notifier form select MSN from the pull-down menu and click Submit.
On the next page, fill out the form with the following:
MSN Login
MSN Password
MSN Recipient Address
Select the Send on ... options you want.
Click Save. The MSN notifier you just added will be listed under Notifiers on the Project Information page along with the other notifiers you may have set up prior to this.