[Freesurfer] Help with Freesurfer Installation

Dear all, I posted a message yesterday regarding the same problem, didn't get much help, hoping to get some help today. I am running Red Hat Enterprise Linux 3, tried to install Freesurfer CentOS4, when I try to access the SetUpFreeSurfer.csh file with the "source" command, I get the error: File or Directory not found. I had the feeling that CentOS4 version of FreeSurfer might not be compatible with my OS, so I tried to configure the RH9 version of the software and ended up with the same error. I can see that the file exists in the "freesurfer" folder. I would greatly appreciate any help.

Thanks in advance, Binu Thomas. Univ. of TX Southwestern Medical Center.