Debian amd64 not detecting my network card (32 bit Debian does!)

["H.S." <hs.samix@gmail.com>]

I decided to install amd64 on my computer which has Asus M3 socket 
motherboard, M4A88TD-V EVO/USB3, chipset AMD 880G/SB850, and onboard 
gigabit lan controller, Realtek® 8111E.

I installed 32 bit Debian using netinstall some days ago without too 
many problems (see my post with subject Asus M4A88TD-V EVO/USB3 (was:Re: 
AM3 socket Asus M4A87TD EVO ...).

But today when I booted my USB stick to install amd64 Debian, the 
installer failed to detect my network card. Boot disk was created using 
the two step procedure listed here (Squeeze section):
http://wiki.debian.org/DebianEeePC/HowTo/InstallUsingStandardInstaller

I also tried different boot.img.gz and net installer from the following 
sites:

for boot image:
http://ftp.nl.debian.org/debian/dists/testing/main/installer-amd64/current/images/hd-media/ 
(file date is 17:58 26-06-10)
http://ftp.nl.debian.org/debian/dists/lenny/main/installer-amd64/current/images/hd-media/ 
(file date is 22:43 10-07-10)

for net installer iso:
http://cdimage.debian.org/cdimage/squeeze_di_alpha1/amd64/iso-cd/ (file 
date is 17-Feb-2010 23:05)
http://cdimage.debian.org/cdimage/daily-builds/daily/arch-latest/amd64/iso-cd/ 
(file date is  13-Jul-2010 17:11)


So, the 32 bit installer worked on my motherboard but amd64 bit 
installer fails to see the network card. Is there something I am missing 
here?

Thanks.