sandy bridge and linux 2.4.x
 

Hi,
I have a new PC with a Sandy Bridge processor and a intel 82576 nic, i am trying to install Red Hat Linux 9 Desktop(Kernel 2.4.20), but i can not use my nic. when i run cat /proc/interrupts and find out all of the interrupt type is XT-PIC.
Does linux 2.4.x can not support sandy bridge?

Red Hat 9 is from 2003 and end of life for a long time. There is absolutely no reason to use that in 2011, especially when you have that new hardware. And no, you will not get Sandybridge support for kernel 2.4.
Install a recent distro, like Fedora 15, Mint 11 or Ubuntu 11.04 to get your hardware supported.

Thanks for your reply. All of your said is right, But if i have to use Red Hat 9 for some reasons, how to solve this problem that i had encountered. Thx.

Get old hardware.

install the DEAD and " buried 6 ft under" rh9 on hardware dating from 1998 to 2003
Yes a computer that has windows 98 on it ( from the OEM)

rh9 is and has been dead.

and call red hat
http://www.redhat.com/support/

Thanks for your help!