Intel PRO/1000 MT onboard network card problem in FreeBSD 5.2-current

[Ganbold]

Hi,

I installed FreeBSD 5.2 and updated using cvsup on Dell Poweredge 1600SC.
However still FreeBSD doesn't recognize network card. It has onboard Intel 
Pro/1000 MT card.
What should I do in order to use this onboard Intel PRO/1000 card? I 
checked Intel web site and found only
em driver for FreeBSD 4.7.
Where can I find latest driver for Intel PRO/1000 MT network card?

tia,

Ganbold