How can I make a custom scrollbar like this?

[nanoflame]

Can someone provide me with a guide to do so? Help will be appreciated.

See image below
http://img136.imageshack.us/img136/8321/picture1lh8.png

I'm referring to the blue scrollbar on the right

[atomic]

You can use a UIscrollbar component...

http://www.adobeflashtutorial.com/Tutorial-Component-UIscrollbar-in-Flash-8-c-11.html

Or a custom one, like this...

http://www.flashkit.com/tutorials/Interactivity/Actionsc-Patrick_-640/index.php