I would say YES... in the short term.
I don't think industry would be interested in your knowledge of B3DSDK, because it's not something they use, but if it get's you using C++, you are making headway. Once you have C under your belt, look at using it with OpenGL or DirectX.
Figure out exactly where you're aiming. C++ is probably the one to go for if you want to be an engine monkey, developing the core code which others use to create games.
I don't think industry would be interested in your knowledge of B3DSDK, because it's not something they use, but if it get's you using C++, you are making headway. Once you have C under your belt, look at using it with OpenGL or DirectX.
Figure out exactly where you're aiming. C++ is probably the one to go for if you want to be an engine monkey, developing the core code which others use to create games.