By default, openoffice will automatically turn the first letter to capital in a sentence. This feature is very useful but sometimes you do not want your first letter in your sentence to be capital. There is a setting that you have to turn off to make this happen. This steps have been tested on openoffice 3.
- go to Tools -> AutoCorrect
- go to Options tab
- Uncheck Capitalize first letter of every sentence under [T] which means disable capitalize first letter of every sentence when typing
- Click on OK