GhostWire ScrollBar
This Flash component allows you to create scrollbars for scrolling textfields. Two different skins are included in this package - a classic windows lookalike, and the silver skin.
Example
Here is an example of the ScrollBar(Win) (filesize 7KB):
Features
Windows Lookalike
The main component here is the ScrollBarWin, which has a classic windows look-n-feel. You can easily change the colors (and even look) of the scrollbar elements via the Properties Panel.

Live Preview
The component comes with live preview, allowing you to see in the authoring environment what you will be getting when the movie is published.
Snap to Pixel
The component snaps to pixel when published, ensuring that it looks crisp and sharp when the movie plays. Usually to achieve this, you need to ensure that you place your movieclips at integer coordinates (no decimal place) during authoring time. This is not necessary with the GhostWire ScrollBar component, which will automatically snap to pixel when published. For example, if the component was placed at x coordinate 20.2, when published it will be placed at x coordinate 20.0 instead. In addition, the component also resizes itself to integer widths and heights.
Truly Skinnable
You can create your own visual elements and then easily swap out the assets, creating scrollbars that look the way you want.