You can chip it, and using most downloaded games you can play on xbox live with them. But recently Microsoft banned 100's or thousands or people from on-line (completely baning the console not just the gamer tag) because they were on Modern warfare 2 before it was even released. so be careful that's all i would say if you did get it done.
chip an Xbox 360 is not recommended
There is a wireless chip for the Xbox 360 S.
Yes, with an original XBOX. But you can't do it with XBOX 360
No.
it is the video output chip
The Xbox Live chip, often referred to as the Xbox Live Arcade chip or network chip, is typically integrated into the main motherboard of the Xbox console. Its precise location can vary between different models of the Xbox, such as the Xbox 360 or Xbox One, but it is generally situated near the CPU and other key components related to network connectivity. For most users, this chip is not user-accessible, as it requires technical expertise to reach and diagnose.
depends what chip you use but yes you can
YES
The Xbox 360 S has a wireless chip which can be replaced.
no.
yes
You can play any online game without Xbox live.