I've had these links on Vector class usages tucked away for a while, now I finally have something to use them for.
_ http://www.mikechambers.com/blog/2008/09/24/actioscript-3-vector-array-performance-comparison/
_ http://www.mikechambers.com/blog/2008/08/19/using-vectors-in-actionscript-3-and-flash-player-10/
_ http://help.adobe.com/en_US/AS3LCR/Flash_10.0/Vector.html

The Vector class needs Flash Player 10. Lately I've been compiling with the Flex 3 SDK, instead of the Flash CS IDE.
_ http://opensource.adobe.com/wiki/display/flexsdk/Targeting+Flash+Player+10

Version Test utility
_ http://kb2.adobe.com/cps/155/tn_15507.html

Flash Player Downloads
_ http://www.adobe.com/support/flashplayer/downloads.html