Make link available after log in.

[Graphicman]

When a customer is logged in the:
$_SESSION['customer_id']

is > 0 ...

So you could use:

if (isset($_SESSION['customer_id']) and $_SESSION['customer_id'] != '') {
// do something
} else {
// do something else
} 

Thanks for the reply Linda, but i'm sorry you've totally lost me... Where do i put this code and also what about the actual link.
Many thanks