this is going to sound so dumb...

ok i want to stop a site from being cached - well i want to set the index to expire say once a week -

now i'm not a coder just a simple stoopid designer so as you can imagine the Apache documentation gave me a headache.

- I have cPanel.

do i do something with the apache handlers in cPanel

or

do i need to create a .htaccess file and enter the code myself? and if so do i really simply type the code into the file and upload it??