I dont know about that software, but i am using below script
To connect:
rasdial "dialup_name"
user_name@bsnl.in password
To disconnect:
rasdial "dialup_name" /disconnect
Save these files as .bat files. Schedule them in task manager at your preferred time to connect and disconnect. Also dont forget to choose the option "Wake the computer to run this task" in tasks properties. For this you need to hibernate or put your computer in standby. Dont switch it off