You may want to create announcements for upcoming department events, assignments, exams, etc. When you create an assignment, you have the option of sending the announcement out as an e-mail in addition to appearing on your course site.
In the Control Panel, click Course Tools, and then click Announcements.
You will see the Announcements page.For a new announcement, click Create Announcement.
In the Subject box, type the subject for your announcement.
In the Message area, type your message.
Under Web Announcement Options, set your announcement's duration and check the box next to Email Announcement if you want to also send the announcement via email.
Under Course Link, select a location to link to, if you wish.
This will create a link to a tool or another content area on Blackboard, not to your computer.