from word help:
2. Click where you want to insert the table of contents.
3. On the Insert menu, click Index and Tables, and then click the Table of Contents tab.
4. Do one of the following:
• To use one of the available designs, click a design in the Formats box.
• To specify a custom table of contents layout, choose the options you want
5. Select any other table of contents options you want.
Creating a table of contents
To create a table of contents, use one of the following methods to specify the headings you want to include:
Built-in heading styles--You can apply the built-in heading styles (Heading 1 through Heading 9).
Outline-level formats -- If you don’t want to change the formatting of headings, apply styles that include outline-level formats.
Custom styles -- If you want to use your own formatting for headings, apply custom heading styles. Embedded headings -- If you want to include embedded headings (for example, the first few words in a paragraph), apply the built-in heading styles.
After you’ve specified the headings to include, you can choose a design and build the finished table of contents. When you build a table of contents, Word searches for headings with the specified styles, sorts them by heading level, and displays the table of contents in the document.