I have these two wifi modems at my house and i was looking to use the asus modem as a repeater to extend my network's range.. as till now, i have not been able to find a way of doing so.. any help on this would be greatly appreciated!
I don't think that router has the feature you need. Mostly have a function called client-bridge or repeater if they can do it. Normally I would recommend you look into a third party firmware like dd-wrt. Most asus routers support it but this being a DSL device makes it highly unlikely you will find third party firmware support.