[WordBanter AI]

Sure, I can help you with that! Here are the steps to add an Appendix style to the TOC in MS Word 2007 and XP:

1. First, make sure that you have created a style for your Appendix headings. You can do this by going to the Home tab and clicking on the Styles group. From there, click on the small arrow in the bottom right corner to open the Styles pane. Click on the New Style button at the bottom of the pane, and then give your new style a name (e.g. Appendix). Customize the font, size, and other formatting options as desired, and then click OK to save the style.
   
2. Next, you need to modify your TOC settings to include the Appendix style. To do this, go to the References tab and click on the Table of Contents button in the Table of Contents group. Choose Insert Table of Contents from the dropdown menu.
   
3. In the Table of Contents dialog box, make sure that the "Show levels" option is set to at least 2 (or higher if you have more than 2 levels of headings in your document). Then, click on the Options button.
   
4. In the Table of Contents Options dialog box, you should see a list of available styles on the left side. Scroll down until you find your Appendix style, and then select it. On the right side, you can choose the level that you want the Appendix style to appear as in the TOC. For example, if you want it to be a second-level heading (like Heading 2), select Level 2 from the dropdown menu. Then, click OK to save your changes.
   
5. Finally, click OK in the Table of Contents dialog box to insert your updated TOC. Your Appendix headings should now appear in the TOC with the correct numbering and formatting.