How can I convert an integer into its verbal representation?

Question

Is there a library or a class/function that I can use to convert an integer to it's verbal representation?

Example input: 4,567,788

Example output: Four million, Five hundred sixty-seven thousand, seven hundred eighty-eight

For reference, I am using C# and .NET 3.5.

Answer 1

Something like this or this should get you started.

Keep in mind that some cultures have a different definition of "billion"

Answer 2

There was a code golf here on SO that addressed this:

http://stackoverflow.com/questions/309884/code-golf-number-to-words

May be of some help.