No, Because Microsoft tracks your Xbox Live Account. So you have to pay for Xbox Live whether with a game card or if you pre-pay.
Is xbox live possible with a dongle
No. There is no way you can live forever in this world.
It is very possible that she has gone on XBOX live.
By disconnected, I am guessing you mean banned forever. The way to fix that is make a new windows live account, wipe your xbox, and make a new xbox live account.
No.
There is no possible way to find people through xbox live. Me and my colliegs checked Xbox live when we made it. There is no possible way some could breack through the server.
No you need xbox live for certain achievements!
No. otherwise your Xbox will be permanantly banned from Xbox Live, Just turn off your mod chip when you go in to be safe
3 , 4th time, your banned forever.
no not on the Xbox 360 black ops
Yes but only if you make your XBox Live account over the Xbox Gamer Tag(non-Live). Basically, You are just converting that gamer tag from XBox(non-Live) to Xbox Live.
Energy doesn't "live" in the first place.