Huge confusion in NH on this one. Does your machine have tracks? Over 54" wide? if you answered yes to those two questions, then you CANNOT ride snowmobile trails. You can ride OHRV trails open in Winter (Jericho, Success and Head Pond), but no groomed snowmobile trails. You must be registered as an OHRV (same sticker you run in the summer).
If you are tracked and UNDER 54" wide, then you can ride snowmobile trails, but you have to be registered as a snowmobile (OHRV registration in summer and another registration as a snowmobile in winter).
If you don't have tracks, then you can only ride OHRV trails that are open (again, Jericho, Success and Head Pond in the Berlin area) and you have to have an OHRV registration.
I'm pretty sure a Wildcat 1000 is well over 54" wide, so come see us in Berlin!