Am using a Mega 100WR router. My existing internet provider set up my system for me. \my bandwidth is almost expired but i purchased a 1G some time ago from an independent supplier and want to configure my router to enable the 1G to operate until the end of this month and then reset the router to my existing provider. Am needing assistance with this setup - I have very limited IT knowledge so ask for a step by step description as to how to go about this