thand you for your reply,according to your recommendation, I do the following things:
[root@control7 root]# cc -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --host=i386-redhat-linux --with-system-zlib --enable-__cxa_atexit
Thread model: posix
gcc version 3.2 20020903 (Red Hat Linux 8.0 3.2-7)
And the value of CC is null !
After I upgraded the kernel form 2.4.18-14 to 2.4.18-18.8.0 and download the new NVchooser.sh and run it, it was successful.
But I can't have the 3D function. I'll try it, thank you sincerely.