Yes, but they must have the same size input and outputs. You can get adapters that will connect the two.
You cannot hook up a guest headset.
Yes and on a phone to
No.
Follow the directions :D
A good gaming headset for Xbox 360 is a Turtle Beachheadset.
no
No, xbox 360 headset can only work with the 360.
yes it does. i got the xbox 360 elite and it came with a microsoft wired headset
yes u cant use it on xbox or computer
to connect to xbox live you need a router or a modem
yes
No, a vga cable is not needed for the xbox 360. However if you would like to hook you xbox 360 to a computer monitor then you would want a vga cable.