My mainboard is BioStar M7NCD (nFORCE2)
Network: (Onboard) MCP NVIDIA MAC + Realtek RTL8201BL PHY
Linux kernel: 2.4.20-8
Drivers download from NVIDIA is compiled for kernel 2.4.20.6 and 2.4.20.9 ,which cannot be actived in current kernel.
I recompiled the .src.rpm file , and got the error below

************************************************************
[root@localhost nforce]# make
make -C nvnet
make[1]: Entering directory `/mnt/backup/system/drivers/lan/nforce/nvnet'
cc -c -Wall -DLINUX -DMODULE -DEXPORT_SYMTAB -D__KERNEL__ -O -Wstrict-prototypes -DCONFIG_PM -fno-strict-aliasing -mpreferred-stack-boundary=2 -march=i686 -falign-functions=4 -DMODULE -I/lib/modules/2.4.20-8/build/include nvnet.c
In file included from /lib/modules/2.4.20-8/build/include/linux/config.h:4,
from /lib/modules/2.4.20-8/build/include/linux/module.h:10,
from nvnet.h:20,
from nvnet.c:21:
/usr/include/linux/autoconf.h:1:2: #error Invalid kernel header included in userspace
In file included from /lib/modules/2.4.20-8/build/include/linux/module.h:21,
from nvnet.h:20,
from nvnet.c:21:
/usr/include/linux/modversions.h:1:2: #error Modules should never use kernel-headers system headers,
/usr/include/linux/modversions.h:2:2: #error but rather headers from an appropriate kernel-source package.
/usr/include/linux/modversions.h:3:2: #error Change -I/usr/src/linux/include (or similar) to
/usr/include/linux/modversions.h:4:2: #error -I/lib/modules/$(uname -r)/build/include
/usr/include/linux/modversions.h:5:2: #error to build against the currently-running kernel.
In file included from /lib/modules/2.4.20-8/build/include/linux/module.h:25,
from nvnet.h:20,
from nvnet.c:21:
/usr/include/asm/atomic.h:40:2: warning: #warning Using kernel header in userland program. BAD!
In file included from /lib/modules/2.4.20-8/build/include/linux/dcache.h:7,
from /lib/modules/2.4.20-8/build/include/linux/fs.h:19,
from /lib/modules/2.4.20-8/build/include/linux/capability.h:17, from /lib/modules/2.4.20-8/build/include/linux/binfmts.h:4,
from /lib/modules/2.4.20-8/build/include/linux/sched.h:10,
from nvnet.h:23,
from nvnet.c:21:
/lib/modules/2.4.20-8/build/include/linux/mount.h: In function `mntget':
/lib/modules/2.4.20-8/build/include/linux/mount.h:37: warning: implicit declaration of function `atomic_inc'
/lib/modules/2.4.20-8/build/include/linux/mount.h: In function `mntput':
/lib/modules/2.4.20-8/build/include/linux/mount.h:46: warning: implicit declaration of function `atomic_dec_and_test'
In file included from /lib/modules/2.4.20-8/build/include/linux/fs.h:26,
from /lib/modules/2.4.20-8/build/include/linux/capability.h:17, from /lib/modules/2.4.20-8/build/include/linux/binfmts.h:4,
from /lib/modules/2.4.20-8/build/include/linux/sched.h:10,
from nvnet.h:23,
from nvnet.c:21:
/usr/include/asm/bitops.h:327:2: warning: #warning This includefile is not available on all architectures.
/usr/include/asm/bitops.h:328:2: warning: #warning Using kernel headers in userspace: atomicity not guaranteed
In file included from /lib/modules/2.4.20-8/build/include/linux/ext3_fs_i.h:19,
from /lib/modules/2.4.20-8/build/include/linux/fs.h:298,
from /lib/modules/2.4.20-8/build/include/linux/capability.h:17, from /lib/modules/2.4.20-8/build/include/linux/binfmts.h:4,
from /lib/modules/2.4.20-8/build/include/linux/sched.h:10,
from nvnet.h:23,
from nvnet.c:21:
/lib/modules/2.4.20-8/build/include/linux/rwsem.h: In function `down_read':
/lib/modules/2.4.20-8/build/include/linux/rwsem.h:46: warning: implicit declaration of function `__down_read'
/lib/modules/2.4.20-8/build/include/linux/rwsem.h: In function `down_read_trylock':
/lib/modules/2.4.20-8/build/include/linux/rwsem.h:57: warning: implicit declaration of function `__down_read_trylock'
/lib/modules/2.4.20-8/build/include/linux/rwsem.h: In function `down_write':
/lib/modules/2.4.20-8/build/include/linux/rwsem.h:68: warning: implicit declaration of function `__down_write'
/lib/modules/2.4.20-8/build/include/linux/rwsem.h: In function `down_write_trylock':
/lib/modules/2.4.20-8/build/include/linux/rwsem.h:79: warning: implicit declaration of function `__down_write_trylock'
/lib/modules/2.4.20-8/build/include/linux/rwsem.h: In function `up_read':
/lib/modules/2.4.20-8/build/include/linux/rwsem.h:90: warning: implicit declaration of function `__up_read'
/lib/modules/2.4.20-8/build/include/linux/rwsem.h: In function `up_write':
/lib/modules/2.4.20-8/build/include/linux/rwsem.h:100: warning: implicit declaration of function `__up_write'
In file included from /lib/modules/2.4.20-8/build/include/linux/fs.h:

When you say you recompiled the source code, did you download the correct package for your kernel? The error at the top says it is for the 2.4.20-6 or 2.4.20-9, when you are running the 2.4.20-8.

There is no pakage for my kernel , or i could just install the rpm.
So i have to recompile the source file, and met the problems above.
What is wrong?
Thanx!