Yes.
You can play some Xbox games on the 360 but on April 14th Microsoft will be ending that feature for Xbox live but you will still be able to play them off line. go to Xbox.com to find the list of games that you can play.
No you can not play xbox on line with PC.
No you can not play xbox on line with PC.
You can do one of two things : one, you can call your Microsoft/xbox live help line and ask them or you can go to Gamestop and speak with them about it
You can buy xbox games on line at the following places I have found for you to look at. Ebay.com sells xbox games on line, and so does amazon.com , and walmart.com are places on line that I would check out first.
1-800-4my-xbox
No you can not play xbox on line with PC.
yes it does from what i know it costs 59.99 per year but you can get it paid by months too.
You carnt because you get signed out of xbox live when you go on a regular xbox game
no only the uzumaki chronicles line is sorry.
yes your membership will go with your profile but you cannot go from xbox to 360