You are talking about VB.NET and not VB6(which is known as Classic VB too). VBC.EXE is the compiler for VB.NET programs and this is present in the .NET Framework folder. This folder is dependent on which version of framework you are using and ideally would be present in "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\vbc.exe".

I am moving the thread to VB.NET forum.