Internet Not Detected

[[GW]Cloud]

Ok, I will start off by telling you my router and modem:

Modem: Toshiba PCX2200 Ethernet

Router: WRT54GS Linksys 2.4 GHz 802.11g

Now, this is my problem:

I was online at one time last night, then all the sudden in the bar of windows, it showed my internet connection with a yellow triangle with a ! in it, saying that it cannot connect to the internet that the access of the ISP may be denied.. The thing is, is the internet works just fine on my father's computer....

Other things are:

1. I cannot go to the router website on my PC

2. All the lights on the router are on except DMZ.

3. All the cable modem lights are on, hence why my dad can connect just fine..

4. When I click on my commection, it shows it sending packets, just not receiving any.

Now, I have tried MANY things and they did NOT work whatsoever, those things are:

1. I did the CMD and put ipconfig /flushdns /release /renew and it didn't do anything to the connection, not even disconnect it when i released it.

2. I did a hard reset and a normal reset on the router, still didnt work.

3. I unplugged the cable modem and router for 30 minutes and reconnected them, still didnt work.

4. I tried to directly connect my PC from the Cable modem to the ethernet on my computer, still didnt work.

I have no idea whats wrong, my dad connects fine, just not me.. Anyone have an idea how I can get my internet to work again?