Home Networking Connected but Cannot Open Web Pge

[amazon]

Hello everyone, Thanks for all the help when I was building my desktop now its running good. I would like to ask again some help regarding home networking.Here is the set up:

INTERNET connect to ADSL MODEM (SPEEDTOUCH 511e ETHERNET TYPE) connect to DELL TRUEMOBILE 1184 WIRELESS BROADBAND ROUTER with 1 internet input and 4 LAN jack at the back then PC 1 connected to LAN 1, PC 2 connected to LAN 2 and PC 3 connected wireless.

When I first config the router I only change the password, SSID all others i did not change. all IP by automatic, DHCP. After this set up I tried to open a web page and it is working I can surf and open whatever web site I go. Firewall is on. but after about 10hours that the three computer was connected I cannot open anymore any web page I check the network conection properties all is connected. I check the router config page I saw the status window that the ADSL or WAN IP address is 10.0.0.1, subnet 255.255.255.0 DNS/default gateway 10.0.0.138 and on the divise i suppose this is the dell router it says IP 192.168.2.2, Subnet 255.255.255.0 DNS/gatewy 192.168.2.1.DHCP

Please give me some advise on how to make this things work always

thank you

[jimmy5k]

it sounds like your isp booted you.
did you try turning off the modem and turning it on again?

[amazon]

I have already tried to turn off and turn on again the modem and Router but same results.
I connected the modem directly to one of the ehternet connection in my PC (Internet-Modem-PC) it works fine i check the connection properties it says address type-DHCP IP-10.0.0.1 Subnet mask 255.255.255.0 default gateway-10.0.0.138.When I do the direct conection of Modem to PC noneed to configure or input username just open internet explorer and already connectd.

When I connect again the modem to router then PC again I cannot open anay web page. When I connect the Modem to the Router I saw a different IP. Connection type DHCP IP 192.168.2.1 subnetmask 255.255.255.0 default gateway 192.168.2.1
If the modem is connected to the dell router what will be the IP, subnet ask deault gateway? would it be the same as when I connect the modem directly to PC? whis is 10.0.0.1 This I cannot understand.

[amazon]

I have also tried to connect like this.

From the INTERNET I CONNECT TO MODEM CONNECT TO ONE ETHERNET JACK OF PC the IP-10.0.0.4 subnet mask 255.255.255.0 default gateway 10.0.0.138 (my pc hav two ethernet input jack) I can surf the internet. Then I connect the second ethernet jack of my PC to one of the LAN port of the router (the router have wan jack and 4 lan) then I connected the second PC to one of the LAN of the router. Then I make a bridge between ethernet 1 and ethernet 2 of the PC where the modem is directly connected. then I configeure manually the IP of the second PC (IP-10.0.0.2 subnetmask 255.255.255.0 default gateway-10.0.0.138) which is connected to the router and also I configure the laptop on wireless manually (IP-10.0.0.1 subnet mask-255.255.255.0 default gateway-10.0.0.138) with this set up I have no problem connecting to the internet on all three computer.
I cannot understand why if I connect modem-router-pc the system does not work cannot connect?