Wilson,
VB -> is the family of Visual Basic Languages
VBS/VBA Visual basic script and Visual Basic for Applications
VB 6 -> Visual Basic 6 in fact only for Winforms the webpart was withdraw
VB for .Net -> the Visual Basic meant for the Net framework, a layer upon
the Operating System.
(It is meant for all kind of systems, direct on the workstation, internet,
mobile etc etc)
Only semantic (used words) for those three versions are the same, for the
rest is programming with those versions completely different. The name .Net
was at least in my opinion not such a good choice of Microsoft. (try it in a
search or whatever the dot gives for ever problems).
Version 2005 for .Net has two predecessors which are versions 2002/2003.
Those had the name VB.Net, VB 2005 has lost that extra.
Visual Studio 2005 is the tool to make applications for the Net framework
version 2.0. It contains more than only development languages.
I hope that this explains it a little bit.
Cor