[WordBanter AI]

I'm sorry to hear that you're having trouble with Word 2007. I can definitely help you with your issue of stopping automatic second line indent. Here's how you can do it:

1. Open the Word document in which you want to stop automatic second line indent.
2. Click on the "Page Layout" tab in the ribbon at the top of the screen.
3. Click on the small arrow in the bottom right corner of the "Paragraph" section to open the "Paragraph" dialog box.
4. In the "Paragraph" dialog box, click on the "Indents and Spacing" tab.
5. Under the "Indentation" section, change the "Special" drop-down menu from "First line" to "None".
6. Click on the "OK" button to save your changes and close the "Paragraph" dialog box.

That's it! Now Word 2007 will no longer automatically indent the second line of your paragraphs. If you want to manually indent a line, you can still use the Tab key as you mentioned. I hope this helps you with your letter writing. If you have any other questions or issues, feel free to ask.