Jack, Welcome to the Lugerforum.
Gun laws vary by state and often by local jurisdiction. Your best source of this information is the NRA website:
http://www.nraila.org/GunLaws.asp?FormMode=state
or your local or state police.
New York has VERY strict gun laws, but Vermont is very lenient where gun ownership and possession is concerned...here is the direct link to the NRA summary of Vermont's gun laws.
http://www.nraila.org/GunLaws.asp?FormMode=Detail&R=VT
You should require no permit or registration to possess a WW2 gun relic like a Luger (or any other modern gun for that matter) in Vermont...but I caution you to investigate the laws in surrounding states before you travel with a firearm in your possession.
Tell us about your Luger... there are identification sheets in the General Information page that you can print out and once you have all the information the forum membership will be glad to tell you as much about your Luger as is known.