Microsoft Office suite comes with some annoying features such as automatic capitalization of the first letter of the first word each time you end the sentence with a period. Many of these features are helpful but at times when you copy text from Microsoft Word and paste in somewhere else the formatting will be lost because it does not recognize Microsoft Office Word format. Same will happen if you are using Access, Excel, OneNote, Outlook, PowerPoint, Project or Publisher.
To avoid this, it is helpful to turn off auto correction feature in Microsoft Office.
If you are using Microsoft Office 2000 or 2003 version, you can turn of the automatic correction features by going to Tools -> Auto-Correction -> Deselect the features you want turned off.

If you are using the latest Microsoft Office 2007, you can turn off auto correction features by clicking on the Microsoft Office Button and then selecting Word Options. Note: If you want to turn off auto correction for other office programs such as PowerPoint then you would follow the same procedures but you will see PowerPoint Options.

Click Proofing and select AutoCorrect Options.

Now deselect the options you want disabled.