You might also want to include things such as files and other Outlook 2007 items in your mail messages at times. Outlook 2007 makes it easy for you to insert a calendar, a business card, or another item in your e-mail message.
To attach a file to a message, follow these steps:
Position your insertion point where you want to insert the file, and on the Insert tab, in the Include group, select Attach File to open the Insert File dialog box.
Locate and select the file to insert, and then click Insert.
Alternatively, you can click the paper clip icon on the toolbar to insert a file as an attachment, or you can simply drag the file into the message window.