As a standard console, no. The PS3 is far superior in terms of hardware, though Xbox live far exceeds PSN in terms of service speed and community.
Xbox Live
No.
A wireless adapter is not included in the standard xbox package.
This is the standard Xbox 360 Controller.
XBOX Live is not a game console. It's a online game service for the XBOX 360.
No, they are different sizes.
That is illegal and is not supported through the Xbox LIVE Service.
about £80 they have no hard drive so have no memory, and are the complete standard xbox
Ebay. But it requires opening up your xbox which voids your warranty and xbox will no longer service you. And it makes you a cheater.
XBOX Live is not limited to certain service providers. You can connect to XBOX Live as long as you're in a country that is currently served by the service and your network administrator is not blocking it. (Short answer: Yes)
If you have infections in CoD 4 on Xbox 360 all you need to do is simply restart your Xbox if they are standard infections.