You need bill of sale or certif. of origin, valid drivers license and $$$$.
If you are out of state, like me, you need $74.00 if you are NH state resident it is less.

Link: list of agents where you can buy NH atv reg. and other info

N.H. OHRV Education - N.H. Fish and Game

the atv is registered in nh I thought it meant that your truck/ vehicle had to be registered in nh to park there

Hmm good question,i'd like to know to,thanks.

I don't thing so. You don't need NH reg for your truck or trailer.

Ok thats good,,hey Otto,shouldn't you be on the road heading to my house? haha,,it looks like the rain has cleared,and now the puddles are deeper,ohh yaa! cya soon.