If you are collecting the nuts yourself the easiest way to stratify them is to go ahead and play squirrel, bury the nuts where you want a tree to come up next spring.
This is following the method of nature, squirrels gather the nuts, bury them for their winter food supply and those that are left behind or forgotten are the new crop of tree sprouts come the next spring.
I have had better success following nature's method than by me stratifying seeds in a refrigerator.
One additional note to Bryant's method. If you don't want your local squirrels to dig up your precisely located nuts, cover them with hardware cloth to deter digging. Remove the cloth before the hazelnut grows through it to the point of getting girdled.
Thanks guys i am going to strattify them in a 5 gallon bucket filled with sawdust or sand with some holes punched in the top and bottom for drainage then I'm going to bury it in the ground and throw a pile of leaves over top. I want to guerrilla plant them around the neighbourhood when they sprout and hopefully will get some growing everywhere..i heard hazel is pretty versatile when it comes to soil conditions so hopefully it will work ...thanks for the info.