When you compose a new email in Hotmail their web page may suggest a large number of email addresses to you as you are typing email addresses into the To: field. Although it is not possible to disable this behavior, even by disabling auto-complete in your web browser, it is possible to significantly limit the number of suggested email addresses by following these steps :
Go to the top right of your Hotmail inbox and click Options
Under Customizing Hotmail select Advanced Privacy Settings
Click the radio button for Only suggest people in my contact list
Click Save
Going forward only contacts, and not email addresses that you have corresponded with, will be suggested by hotmail when composing a new email.
That is a decent reply. In fact, I think you are correct in saying that if you following the procedure outlined that the contacts will be removed from the To: box.
I appreciate your time in response. I can assure there is no harm or wrong doing coming about as a result of your advice,