Here is a link to the TOC concept:
http://www.shaunakelly.com/word/numb...fcontents.html.
But, specifically to your point, you need to adjust the TOC "style" for the second and succeeding lines to 'hang' to the proper indentation. This can be accomplished from the "Paragraph" menu which you can get to in a variety of ways (i.e., right-click on the appropriate line and select "paragarph" or, right-click on the appropriate "style" and select Modify Style/Format/Paragraph). Make your adjustments in the "Indentation" section of the Paragraph menu.