The xbox is universal, is is appropriate for any age. It is the games that can be inappropriate. Their is nothing on the xbox itself that is inappropriate for any age.
You can not play xbox 360 games on an original xbox, however you can play some original xbox games on an xbox 360 console.
You Can Use An Xbox 360 Capture Card
I think the question is "Do you use an original Xbox or Xbox 360 controller when playing original Xbox games on an Xbox 360?" If it is than, you use an Xbox 360 controller. Left Bumper turns into "white button" Right Bumper turns into "black button"
can you use Nintendo Wii games in Xbox 360
They will not work on the old Xbox. But if you have a hard drive on your Xbox 360, you can play old Xbox games right on your Xbox 360, and then you can use the Xbox 360 controller to play old Xbox games.
There is not an age limit set to use it.
No you need XBOX 360 controllers.
The original Xbox controller doesn't work on the 360.
Yes you can.
you don't need too, you can use xbox games on xbox 360
sometimes but not always
yes you can use the xbox 360 controllers on the xbox 360 slim. I use my controllers from my old xbox on my new 360 slim.
You can not play xbox 360 games on an original xbox, however you can play some original xbox games on an xbox 360 console.
No.
No.
No.
The 360 slim isn't an upgrade, it's a new console release. You can however try gamestop or entertainmart and see if you can sell your old 360 to help split the difference for a used 360 slim, this is what I did when upgrading myself from original xbox to a 360 elite. Or you can sell your old 360 for as much as you can get for it without going over it's original price (or you can try ebay.com if your the appropriate age, that can help get a good price too and perhaps go over) Then use that profit for a new 360 slim.