If you need to increase the range of your WiFi router (assuming you have placed it correctly) , you can either buy a dedicated wireless repeater which are also quite expensive OR you can upgrade your old router to work as a Repeater (assuming you have 1 more spare router available) by using the famous third party firmware DD-WRT . They have firmwares for many routers of popular brands. You are out of luck if your router is not present in their list. Its similar to like upgrading ROM of your Android phone to something like Cyanogenmod . I downloaded the firmware for my router, upgraded using the standard firmware upgrade option . After following the steps mentioned here to make my router as a Repeater Bridge, my old router was rocking in its new avatar.
