Hello luci37388,
Thank you for posting to the Microsoft Answers Forum.
There is not an Office Suite of products included in the Microsoft Operating System. However, if you purchased an OEM computer from a retail establishment, they may have included Microsoft Works or Microsoft Office as part of a package deal. You can then use Word or Microsoft Works to type a letter.
Included in all versions of Windows 7 there is Notepad for creating text files and Wordpad which has more complex formatting available. You would get to them by going to Windows Start Button, select All Programs, and select Accessories. When the list expands you can select Notepad or Wordpad to write your letter. Then you can print using Print option. You must have already added your printer.
If you have more specific questions or if I didn't answer your question, please reply back and let us know.
Sincerely,
Marilyn
Microsoft Answers Support Engineer
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