Header files

I am using openSUSE 11.0. In order to include shared libraries, i understand that i need to edit /etc/ld.so.conf and then run ‘ldconfig’. Is there something similar for including header files? I am trying to compile codes using Intel compilers and so i need to include the Intel headers. Is it just enough that i add the include paths in the .bashrc file by using the ‘export PATH=…’ option ? Will this cause conflicts with the headers of the GNU compilers?