want to buy a modem

hi guys guys my modem just got fried up airtel is charging me 1700 for wifi modem and that to for some crap binatone wifi modem ....i am already having a wireless router from netgear it a 3 yr old router and works perfect but its signals are weak any .....now i need the best alternative can my router act asa repeater if i buy a router come modem or shud i just buy an adsl2 modem from local market ....please need solutions asap.



NO INTERNET =NO LIFE