Xbox – still create an account on Xbox Live for the Classic Xbox

I would suggest buying your son a prepaid card. You do have to remember when it runs out and buy another, but they tend to be $10-15 cheaper than buying the same amount of time through Microsoft directly. It's also much easier to stop being a subscriber, since you just don't add more time to the account - no need to figure out how to stop the automatic payments.

You can create your X-Box account for any country, however you can only change countries once every 12 months. This can be done via the X-Box live website. You have to however copy all your downloaded content to a backup USB since you can't re-download these. Also the country on your Live account and the X-Box account must match, otherwise it will create some havoc. To access the change your region options on X-Box live look for the following on your account:

Unfortunately I am getting the following screen since I recently did this, however you will get the option to choose a country:

Gamercards can only redeemed for the country they are bought for, as they are linked to the Live store for each country.

The only reason I can imagine your games won't work bought in India, is if they are not PAL/NTSC compatible depending on what you use. South Africans for a long time bought Australian and UK X-Boxes and bought games locally and they worked fine.