cannot exec cc1

I am running Mac OS X 10.4.7 and am trying to compile a C program.  I
need to use gcc-3.3 as that is what Matlab requires (using the mex
function).  Anyway, when I try to compile it can't seem to find cc1:

$ gcc-3.3 -o bob bob.c
gcc-3.3: installation problem, cannot exec `cc1': No such file or
directory

I have looked all over trying to figure out where cc1 is, but can't
find it.  I tried installing several things on the install disk.

What package do I need to install in order to be able to compile?