You can download the latest version of the Intel Fortran Compiler from the Intel homepage or http://www.intel.com/software/products/compilers/flin/noncom.htm and in case of non commercial, educational or scientific purpose you will get a license key for free. Tested versions are ifc 7.8, ifc 8.0 and ifc 8.1.
In the following the installation of the ifc 8.0 is described as an example. After downloading the tar archive l_fc_p_8.0.034.tar.gz you have to extract it via
tar -xvzf l_fc_p_8.0.034.tar.gz
The change into the directory l_fc_p_8.0.034/
cd l_fc_p_8.0.034/
and execute the install.sh command
./install.sh
You will be prompted to enter a number according to the kind of machine type, Kernel version and glibc version you are using. You will have to enter where a valid FLEXlm license can be found in your system (you get the license from intel for educational or scientific purpose for free). You can create e.g. a directory /opt/intel_fc_80/licenses and put there the file l_for_61850218.lic.
To use the intel fortran compiler ifc you will have to include the path /opt/intel_fc_80/lib/ to your LD_LIBRARY_PATH variable and the path /opt/intel_fc_80/bin/ to your local PATH variable, e.g.:
# ---- for fortran setenv LD_LIBRARY_PATH /lib:/usr/lib:/opt/intel_fc_80/lib/ setenv PATH /opt/intel_fc_80/bin/:/opt/intel_fc_80/lib/:$PATH