Annually
Once a year.
No... a vehicle which has a lien against it isn't paid off.
It is possible to renew your vehicle registration with the Texas online website. You have to live within certain counties though to do it and you have to have a credit card and your insurance card in front of you when you renew your registration online.
No but only somebody with a license can drive it for you.
Go to a NJ DMV office with the old registration, proof of insurance and checkbook. Fill out the forms and the nice people there will give you a fresh document. If no registration exists take the vehicle title with you.
In most areas, you need to renew your license plate sticker every year. This allows states to keep vehicle records and registration as current as possible.
You'll just have to renew them when you get back in the country
Go to the department of motor vehicles or go to their website and renew it.
Yes you do have to renew your car licence if you do not use your vehicle.
You lost the registration card, I'm assuming. It's still going to be in the system. Most places, you just request a copy of it if you need it for inspection. Otherwise, you get a letter in the mail, it tells you what to pay and how to pay it.
If you live in a city, state or country where emissions checks are mandatory to renew registration. Then removing your catalytic converter will make it impossible to renew your registration.