Motor Rev, smoke, gear changing problem.

I have a 1997 VW Passat VR6. Recently it started to fall out of gear into neutral at stop signs after giving it a little extra gas it would jump into gear, as if I was learning to drive a standard, with that problem still occuring 1week later it was having problems changing gears and would rev a lot in 1st gear before it started moving. A few days later while dealing with the same issues smoke started coming out of the tail pipe and hood after I stopped mostly from the right side. The smoke didn't seem to have much of a tint mostly gray/white. The car does not go into gear at all.

Any incite at all would be appreciated.