Instantiating a class - No overload for method 'Subjects' takes '0' arguments

[Jheshka]

I have referenced a dll in a asp.net 2.0 web site developed in Visual Studio. The person who supplied the dll said to reference it and instantiate a class called Subjects.I have referenced it and if I type:\[code\]Subjects mySubjects = new Subjects();\[/code\]it appears to be 'found' as 'Subjects' appears in light blue text.If I then try to access a method by writing this:\[code\]string ProjectSubject = mySubjects.GetSubject(ProjectID);\[/code\]again, it seems to be 'found' in that intellisense, as soon as you type the full stop after mySubjects shows the methods available to be called.So far, so good. But, when I try to run the page, I get a compile error which is:No overload for method 'Subjects' takes 0 arguments.I don't understand. I thought you always had to reference a class with\[code\]someClass myClass = new someClass();\[/code\]