You can be pretty much assured that you are not going to be notified via E-mail that you have won something, expecially if they ask for any personal information or account numbers to deposit it to. Click on the following link to view the latest warning from police on a Walmart Scam:
http://www.wptz.com/download/2009/0130/18605308.pdf (http://www.wptz.com/download/2009/0130/18605308.pdf)