Is there any software or tricks which log in automatically?

[Erratic665]

I am having an internet connection in my Laptop via modem(cable line). It needs to open the internet providers log in page always in one tab. Problem occurs after power cut & disconnection from the provider. Most of the time it needs to restart my laptop to establish the connection, then I have to log in again. I have free usage between 2am to 8am. I give some download that time but most of the day I find that after downloading some Mb download the connection has stopped(some day the connection works fully). Is there anyway that the connection will log in automatically when the connection is available?