xbox 360 remote connection via ethernet isp trouble.

[jcool144]

This is my setup.
In room 1, I have my pc connected to my sagem router via Ethernet, which is connected to my telephone socket, which has sky mid broad band service, My pc is running vista and the Internet works fine.
In room 2 I have another pc running windows xp which is connected via a wireless netgear USB adapter and also works fine.
In room 2 I have my xbox 360. I connected up the xbox 360 to my laptop also in room 2 via ethernet, the laptop is also connected via a a wireless connection to the internet/sagem router.
I have managed to get the laptop to connect to xbox live using this set up, I had to manually configure the network settings, on the Xbox 360 the isp address is 192.168.0.2 and on the laptop the isp is 192.168.0.1 the default gateway and dns settings are also 192.168.0.1 and the subnet is 255.255.255.0, then I had to bridge the wireless and the LAN connections, all works fine.
In room 2 I want to connect the Xbox 360 to the other pc, (as laptop is used for business) so I disconnected the ethernet cable from the laptop and connected it to the pc.
I then set up the wireless and LAN network settings on the pc the same as the laptop.
When I test the Xbox live connection it fails on ISP settings???
I have tried using different values in the isp ie. 192.168.0.6 on the pc and 192.168.0.7 on the xbox360 also 192.168.0.97 on the pc and 192.168.0.98 on the xbox360, but it fails every time???
Why does the laptop work and yet the PC won`t work, is there another setting somewhere related to isp settings???

[PaulSky]

Never manually set a PC to use 192.168.0.1 as its IP address. If you have indeed used that IP as a manual IP address for one of your PCs you are stuffing your network up.