how to access the visual c++ dll

Then you haven't a problem to access your dll and make use of it, you just right click on the project and add reference then a window appears select the browse tab then browse to your dll then click ok
After that include it to your project

using yourDllName;

then you can make use it as it is leveraged with C#, because the Common Language Runtime enables the use of multilanguage context within a unique project as all the codes those written using C# VB.NET J# or any other supported .Net languages are compiled to IL the intermediate language that stands between the high level language and the native form

Sir,

I have done my program in visual studio .net2003.

thank u verymuch.

with regards,

Is you biblio leveraged with unmanaged code, I mean outside the .Net environement?