500 Internal Server Error

While error occur in developing Web Service project on VS .NET 2003, it show just 500 Internal Server Error. In same machine, I create new web application but it show all error details when error occur. What should I do to make my VS show full error? it's very hard to debug program without returning full error.

Thank you,

I just ran into this recently, and I'm not sure what the best way to do is, but I just caught the exception and did a Debug.WriteLine(ex.ToString).

HTH,
Mike