Hello,
Install the Control Center CC3, if it is not already installed. Connect the MFC-5460CN to the computer. Open the CC3 software. Click the Scan button. You will have the choice to Scan to Picture, Scan to OCR, Scan to E-mail, or Scan to file.
You click to E-mail. The MFC scans the document and opens the default E-mail program (Outlook, Outlook Express), attaches the scanned picture and all that is left for you to do is to supply the E-mail address where the document is to be sent.
If you have problems doing that, scan to file then open the E-mail client to create a new message and attach the file you scanned.
Hope it helps.