select the checkboxes which relate to the page update alerts that you
wish to receive. If you wish to change your alerts, merely
re-enter your email address and select the relevant checkboxes.
Please note that not all email servers (e.g. Yahoo!) will accept emails sent from a list. If you sign up for these page update alerts and do not receive the emails, it is probably because your email server is blocking the emails. In this case, you can either contact your email server and ask for the block to be lifted or sign up for these page update alerts using a different email address.