After I gave up my desperate way of driver stallation I found some very useful information:
http://lists.debian.org/debian-user/.../msg03577.html

I followed the instruction and it's working fine now. Thanks to Vincent. It's really great that he reported each single step how he brought his network card working on debian. So, I put the link here for next nvidia nforce user

I got my driver from:
http://www.nvidia.com/object/linux_nforce_1.0-0256.html

Phuoc Can HUA