wireless routers help needed?

Ok so we have Cox internet and my config is separate modem (Motorola SB5101 http://www.motorola.com/Consumers/US-EN%C2%B7%C2%B... and separate wireless N router (DLink DIR825 http://www.dlink.com/products/?pid=681).

We are switching to Qwest and we received a modem/wireless router(g) (Q1000 http://www.actiontec.com/products/produ%C2%B7%C2%B... combo from Qwest. We thought we were just getting the modem, but they said our order was right, so here I am...

Now I still want to use my N wireless router (DLink DIR825 http://www.dlink.com/products/?pid=681) that I have already and disable the wireless router function on the modem/(wl)router (Q1000) combo.

I've disabled the wireless router function on the Q1000.

Disconnected the internet cable from the Motorola modem and...

Connected the cable to the internet port of the DLink router to LAN#1 of Q1000

(Which technical support said to do)

But I cannot access the internet still. PC1 is wired to the Q1000, which I can access the internet. PC2 is wireless, but not connecting to the DLink router through the Q1000, not connecting to internet.

NOTES:

- I haven't changed any SSID or any security passwords on the DLink router.

- When I connect it back to the Motorola modem, I can access the internet fine.

- I have reset (unplug/plugged) the Q1000 and the Dlink router when connected together, still nothing.

- I've Connected the Ethernet cable to the LAN port of the DLink router to the port of the Q1000, but access to internet became slow on PC2(wireless) and no access at all on PC1(wired). {weird, but that's what happened :/}

What do I need to do?

Thank you,