if wan just to extend wireless.. then hv old wireless router? even if streamyx anything can use... just login to admin page and DISABLE DHCP then connect to ur dlink useing lan cable... now u hv two wireless cost nothing

DHCP is the one that give ur pc the IP

so u hv many PC/laptop/idevice in ur network, each need its own ip.....

but TM can give u one IP only... so u buy router... the router takes IP from TM, then give all ur device a private IP....

so now all ur device can connect bcoz router manage them all and using only one IP from TM   .... and only one IP is needed from TM bcoz ur router give them all private "internal" IP

This function (giving private IP) is done automatically by DHCP

so everything is good like this if u hv one router in ur network..

if u hv two, both give private IP... BUT only one of them hv the TM IP... so the other one when give private IP no internet.....

This is why I tell u DISABLE DHCP on second router, then it will be like access point onli....
bcoz it doesn't give private IP... ur main router give IPs, this one only make a link and allow u to use wireless...

in short, u only need one DHCP in ur network (one router), if hv other router connected must keep its DHCP disabled (turn DHCP off)...

hope u got it bro