The unwanted lines are border formatting. Since they are appearing as lines,
that means they are attached either to the paragraph that occurs immediately
before them or after them. Click in the paragraph right before them, then
set the borders dropdown tool to No Borders. If the don't disappear, then
click in the paragraph right after them and do the same.
The borders tool is in the Home tab (Paragraph chunk), if this is Word 2007.
If this is Word 2003 or earlier, try Format - Borders and Shading (I
think--don't have Word 2003 anymore).
--
Herb Tyson MS MVP
Author of the Word 2007 Bible
Blog:
http://word2007bible.herbtyson.com
Web:
http://www.herbtyson.com