In ,
CKT typed:
While creating a New Mail message in my Microsoft Outlook 2003 I get
an option ACCOUNTS which gives choice to send by MS Outlook &
Outlook. What is this and what the difference between the two
accounts ?

These are the names of whatever e-mail accounts you have set up in Outlook.
Go to tools | email options | view/modify e-mail..... you can change/rename
the accounts to something more meaningful (e.g., Personal, Business).