better to do so... coz is the TM DIR-615 is very poor quality unless u flash with DD-WRT firmware for more stability (of course no IPTV Support. Before i change to Asus router the DIR-615 is always disconnect from internet and wifi always disconnect and weak signal. after i change already have improvement on the signal for whole house. Even outside the house for 10-20 meters also get the wifi signal from asus Router. Asus is a great brand that i can recommand. since i use 2 unit router and my customer use asus networking product without any complaint so far with around 10 unit Asus RT-N13U B1 Sold.

as my setup at my GF house is BTU - Asus RT-N13U B1 Router - Prolink WNR 1008 Gigabit Router (AP Mode to PC, Handphone & Tablet) / TM DIR-615 (AP Mode to Smart TV, Game Console, HTPC & NDS). coz the PC and Smart TV is at Different Place so i decide to use 2 AP for less cable.

as my House Setup is BTU - Asus RT-N16 Gigabit Router (Computer Room 1st Floor) - Belkin F7D2301AK (AP Mode to Smart TV and my Mom's PC at Living Hall. 2 Cat5e cable from computer room to living hall for Unifi IPTV and the Belkin AP.

so u can try to get 1 and u will supprise with the performance. especially with RT-N16.

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
if wan new all in one router depen on budget:
if money np... get best: http://www.draytek-malaysia.com/2130.html
if want good quality + good price... get: http://www.tp-link.com/en/products/details...del=TL-WR1043ND

yes can, ANY one can. go to admin page and DISABLE DHCP, now connect from lan port of it to lan port of ur main router... thats it! u hv access point 

I'm planning to get a N56U soon haha...

about hp dropping signal, try changing the frequency band in ur wireless router to 20MHz. Our hp don't support 40 MHz.

bro do u real ALL of my reply? 

u can access the belkin admin page... most of time router default IP is 192.168.1.1

SO: if ur tmdlink is using 192.168.0.1.... then change belkin to 192.168.0.2 .... got it right?
router 1: 192.168.0.1
router 2 = router 1 + 1    = 192.168.0.2 <===== so change ur second router (belkin) ip to this

and u can access both control panel.. both of wireless is active also...

when u purchase new router make sure it got vlan tagging....tplink needs to flash with custom firmware..
draytek supoprt vlan taggin already from factory... so it can replace all and IPTV works (see my sig)

good luck bro

Did you connect the 2 router through LAN-LAN? It won't work if you connect the LAN from D-Link to the WAN of the Belkin.

TPLink/Asus for budget setup.
If got higher budget go for MikroTik

Or vigor mentioned earlier