1.c++ is originally designed for web, it has been execlling at non-web areas, such as graph, image, real-time..., whereas .net is only for web, so if you are not in this area, don't worry.
2. VB.net vs. c#
as an old vb fan, you will find VB.net is a little more powerful than c#. believe it ot not.
3. c# Vs. java2
as a java coder, you will find out a new brother.
4. .net=c# or VB7?
it's much much more than c#+VB.net, languages are not the core.
even the out-of-date c can build up any hot web project.

5. the market is needing "developers" rather than "coders".