HELP- MSNGR 6.2 AUDIO-NEVER WORKS?

[LARISA]

I have XP-home ed/and MSNGR 6.2, but "AUDIO-VIDEO" NEVER
WORKS TOGETHER ON MSNGR 6.2?
WHY is this,?NETMEETING AUDIO-VIDEO WORKS GOOD TOGETHER,
so why MSNGR 6.2 CAN't DO THE SAME??
PLEASE HELP?