Can anybody tell me if the WRVS4400n can be used as a WAP, I have two of these units, need to extend the wireless range on my network, if so; what settings do I need to change on both routers?

Can anybody tell me if the WRVS44n can be used just as a WAP? I have two WRVS440n, need to extend the wireless in my network and I wanted to use the second as a WAP. If so, what settings do I need to change to both routers?