yeah, if you have a quick read of the attachment, you will have a brief idea od what to write. Just have a read and you will understand. The following is from the attachment:
On the Tools menu, point to Letters and Mailings, and then click Mail Merge to open the Mail Merge task pane.
In the task pane, click the document type you want to create. Click Next: Starting document at the bottom of the task pane to move to the next step.
Choose your starting document by clicking an option in the task pane.
Click Next: Select recipients at the bottom of the task pane.
You don't have to be so to the point, but kinda summarise the above . . note: the above isn't all of it, there is still more steps involoved.