Promiscuous Mode

HI,

I have an Inspiron 640M (just bought it for 2months)  I am trying to use Etherreal to monitor my hard wire and wireless network.  I don't know whether the on boad Broadcom 440x 10/100 Integrated controller (NIC) on my new Inspiron 640M support Promiscuous mode or not.  If not, is there any new driver that I need to upgrade in order to use Ethereal. Does anybody know the answer?

Thanks in advance