Awaking from stand-by by optical mouse?

Hello,

I have an Microsoft optical mouse which i can use all the buttons with

XP's own "Microsoft Whell Mouse Optical" driver without problem but if

i put my system into "stand-by" mode, mouse power (Red light) is

turned OFF and only left-right and middle button(Wheel-down) awakes

computer from standby.

I cannot awake computer with my MS optical mouse's MOVE or wheel

scroll (up/down) buttons. Only standard left-right buttons are

effective for awaking from stand-by.

Is it normal for an optical mouse not to awake with MOVING and wheel

(scroll) buttons?

Thanks.