Here's a little info on registatration too. Have the previous owner fill out some paper work, just a couple of signatures and address info., thats all. I forget what forms they were, but when I did mine, someone on here told me which ones they were and then I went to the NY DMV website and printed them off the website.
VERY IMPORTANT: call the area cops and have them come to your house to run the VIN numbers on your trike. If they clear, they will give you a slip that says that the VIN numbers have been cleared by the police. That looks really good to the DMV and you should have no problems after that, as long as it was never reported stolen.
84'200s (Dad bought new in 84, long gone)
84'YTM200 (sold 02)
85'KLT160 (sold 05)
84' Big Red (Cobra exhaust,good shape) sold in 08
84' Big Red (Parts Bike, runs good though)sold in 08
85' 250SX (New plastic, Clark Plastic Gas Tank, Web Cam Camshaft, Cobra Exhaust, Moose Jet Kit, etc..) sold in 2010 and highly regret!!!
04 Polaris Sportsman (Swapped 400 motor with a 500, Polaris wheels w/Kendra Bearclaws, Moose Fender Flares, Brushguard, Warn Winch)
84 200s (Needs work!)