Setting Environment Variables

[Ben Ocean]

Hi;
I'm trying to set environment variables so I can define my own path for my
modules. My problem is I don't know where to set the PYTHONPATH. My book
says do it in the .cshrc file: where the heck's that? My Linux book says it
should be in the /home directory, but it isn't. I own this server and it's a
standard RedHat 6.2 install. Please advise.
TIA,
BenO