Sorry for going AWOL, but you know bosses. They actually expect you to get things done!
Triforma is the intermediary level of programming between MicroStation and all of their discipline specific applications. You can create 3D geometry but it's not as automated of intelligent as the discipline specific stuff.
If you're not used to working in 3D it's going to take a little getting used to, regardless of which program you use. What is it that you're struggling with?