Just recently I installed the gcc compiler on my SME box (wanted to compile & install NTOP 3.1).
I installed the following RPMs:
cpp-2.96-113.i386.rpm
gcc-2.96-113.i386.rpm
glibc-devel-2.2.5-44.i386.rpm
kernel-headers-2.4.9-34.i386.rpm
kernel-source-2.4.20-18.7.i386.rpm
It took some effort to find all the RPMs, but finally I succeeded.
If necessary I will make the RPMs available on my server for download; just let me know.