Comcast Connection Error

[Devia Eleven]

I am running the internet using Comcast Broadband Internet. The internet is being accessed through an Arris Cable Modem. I am using a Linksys Router and an Arris Cable Modem.

 

Both the Router and the Cable Modem have cables from the Comcast Television box in them. A splitter was used to share the Comcast Television Cable signal from both devices. The problem is that I cannot connect to XBOX LIVE using the router.

 

The Cable Modem only has one Ethernet port, an Ethernet cable is connected from the Cable Modem's Ethernet port to the first port on the Linksys Router. The second port on the Linksys router is connected to the Network Adapter of my PC. The third port of the Linksys router has an Ethernet cable connected from the XBOX 360. The router is detecting the XBOX 360 as a machine, but it still can't connect to the internet. However, my PC can still connect to the internet whilst the XBOX 360 cannot. Here is a visual display of my network setup.

 

 

The other error I have is that, I cannot get into my Router's settings. Before our new Cable/Phone/Internet installment, I was able to access my Router's settings through "http://192.168.0.1", but now that does not work.

 

Here are my ipconfig statistics.

 

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration

	Host Name . . . . . . . . . . . . : self-78dc63e4e0
	Primary Dns Suffix  . . . . . . . :
	Node Type . . . . . . . . . . . . : Unknown
	IP Routing Enabled. . . . . . . . : Yes
	WINS Proxy Enabled. . . . . . . . : No
	DNS Suffix Search List. . . . . . : hsd1.ga.comcast.net.

Ethernet adapter Local Area Connection:

	Connection-specific DNS Suffix  . : hsd1.ga.comcast.net.
	Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connecti
on
	Physical Address. . . . . . . . . : 00-11-11-96-1D-3B
	Dhcp Enabled. . . . . . . . . . . : Yes
	Autoconfiguration Enabled . . . . : Yes
	IP Address. . . . . . . . . . . . : 76.20.222.20
	Subnet Mask . . . . . . . . . . . : 255.255.255.0
	Default Gateway . . . . . . . . . : 76.20.222.1
	DHCP Server . . . . . . . . . . . : 68.87.68.13
	DNS Servers . . . . . . . . . . . : 68.87.68.162
										68.87.74.162
										68.87.64.196
	Lease Obtained. . . . . . . . . . : Saturday, March 07, 2009 11:13:25 AM

	Lease Expires . . . . . . . . . . : Wednesday, March 11, 2009 11:13:25 A
M

 

When I type my Default Gateway address into the web browser, I cannot seem to access that page where settings can be changed, the page that is hosted through Comcast.