Hey Craig!

>If last character = 's'
> Add 'es'
>else
> Add 's'
>Endif

yeah, I wrote a little fancier than that:

if (text.EndsWith("y"))
{
  plural = text.Substring(0, text.Length - 1) + "ies";
}
else if (text.EndsWith("ch") || text.EndsWith("x"))
{
  plural = text + "es";
 }
else
{
   plural = text + "s";
}