It is always a good practice to add some text to a slideshow so that it indicates what the content in the images is all about. Credits can also be used to acknowledge those involved in the making of the video. Windows Movie Maker gives you a choice of different credit styles, by means of which, you can add more meaning to your slideshows.

Click "Tools I Titles and Credits". Select a point in the video clip where you want the credits to be displayed and fill in the grid with the appropriate credits.

NOTE:

The left column in the grid indicates the subtitle, while the right column is for the main credit name. Once you are done filling the credits grid, click "Done, add title to movie". It will be added at the position that you had selected for it in the Timeline. i.e. either at the end of the file, the beginning or somewhere in between it.