There is a type of cleaner that you can get at places like Wal-Mart specifically for removing tarnish from metals. I'm not sure what its called but I know of people that have used it for that reason.
The short answer: A good silver polish and "elbow grease".There are a number of ways to clean your silver, but you need to be careful as to what methods you use. Many of the over-the-counter silver...
It depends on how long it has been sitting there. if it is just from a days wear it should wash off with some soap and water and a washcloth. if it from longer wear and has not come off with simple...