Country/Region/Cities database

I would like a database of Countries/Regions and [login to view URL] will be in the form of an sql script (for MS SQL). There should be three tables 1) Countries 2) Regions 3) Cities. The countries table will have a list of all the countries in the world, the regions table will have a foreign key which is the primary key in the countries table .The cities table will have a foreign key which is the primary key in the regions table. The data needs to go into drop down lists. Accuracy is VERY important for this project, if you are not 100% sure of your data, please do NOT bid for this project. I will like to see a smaple of the data as well before I accept any bids