Not a dumb question, the way the products are named can be confusing.
The problem is we (Microsoft) use the same name for the language and for
*some* members of the family of Visual Studio developer tools.

VS.NET 2003 Pro gives you the ability to write apps in VB.NET, C#.NET, J# ,
or C++.
There is nothing more to buy.

Microsoft Visual C#? .NET 2003 is a separate dev tool than enables you to
write apps only in C#.
It should be considered a subset of the VS.NET 2003 Pro product.   likewise
with the other language-specific editions.

-Dino

Dumb question.

Does Visual Studio.Net 2003 Pro contain Microsoft Visual
Basic? .NET 2003, Microsoft Visual C++? .NET 2003,
Microsoft Visual C#? .NET 2003, and Microsoft Visual
J#T .NET 2003, or do they have to purchased separately?

Stretch