Automatic redial for internet connection

[Fisher]

Hello, I have a boardband modem in which every now and then disconnects itself. my question is where is the dial-up connection box located in what directory on the c: drive so that i can click that little checkbox that says auto reconnect on it. as all i do to start my internet is just click on firefox it doesn come up with it.

i had a look in internet options and network options but to no avail.