libgfortran.so.2 scilab-4.1_3

[Gaye Abdoulaye Walsimou]

Hello list,
I have this error when i try to use scilab:

/usr/local/bin/scilab: /usr/local/lib/scilab/pvm3/lib/pvmgetarch: not found
/libexec/ld-elf.so.1: Shared object "libgfortran.so.2" not found, 
required by "scilex"

I try to use it under freebsd 6.2-STABLE, xorg 7.2, kde 3.5.6.
I understood that I need libgfortran, but don't know what port to install

thanks a lot for any suggestion and help