This is absolutely, positively, without-a-doubt a scam! I am a writer on several sites (Yahoo, Helium, a Columbus crime reporter for Examiner etc...) and have won several writing competitions. I wrote a couple articles that includes info on how to determine whether a sweeps or contest notice is real or not. I plan to do another one soon as an update because I really hate to see anyone get scammed out of money! This is also a way that criminals steal people's identity!
There is no information on the internet about National Data Advisors. Why? Because they are apparently not a legitimate company. There isn't even a phone number or address in the phone book or any type of directory!
Always remember this rule - if you did not enter, you cannot possibly win. Some sweeps or contest administrator cannot just pull an individual's name out of the sky and tell them they have won a bunch of money.
You also never have to send any money in to claim a real prize. A scam was just stopped this week close where I live - an 80 year old woman already sent in $10,000 after receiving a phone call and letter claiming she won a bunch of money from Publishers Clearing House. She was told she had to send in money for taxes and "processing" fees. I follow the PCH crew pretty closely; Danielle and the rest of the team at PCH have repeatedly said they never, ever call people and you never have to send any money to claim or receive a prize from PCH! Also, they surprise you with no advance notification on big money prizes. My father entered a PCH sweeps and won a TV several years ago and he was never sent anything to fill out before he got his prize. He never even knew he won until UPS showed up with the TV and inside was a letter from PCH explaining that he had won. Thank goodness (!) for an alert teller at the woman's bank who stopped her from withdrawing more money! The woman was just getting ready to send the scammers another $30,000! She is now out the $10,000 that she already sent!
While sweeps winners are required to complete tax forms to claim large prizes, again, it is for legitimate sweeps that they entered and have won a major prize, not something that appears in the mail from someone they never heard of. Another red flag is the odd prize amount. Scroll thru Mr. Sweepy's list of sweeps; how many of the cash prize amounts have an odd change amount like in your neighbor's notice? They will almost always be an even dollar amount.
Please read this to learn more. This should help to better determine scam sweepstakes and contest notices.
http://voices.yahoo.com/...-and-8939495.html?cat=41 and also
http://voices.yahoo.com/...tests-9024425.html?cat=7
Make a copy and show your neighbor or give her the links. It is good she has you to consult regarding this!