I have been using Pro/E since 1996.
One of my engineers just showed me in SolidWorks how to convert/scale 2D drawings into 3D models and orienting multiple sketches and drawings.
Is this possible in CREO? This is a powerful tool for reverse engineering.
I suppose the PTC flavor of this is the old AutoBuildZ application. To use it, enable it with a config.pro option
It works from within the drawing mode; it lets you take a drawing and use its entities to automatically build sketches & features in a new part.
It works fairly well, but you will have to train up on it because, just like in Creo, a clunky interface that doesn't provide useful feedback is a killer for a self-learner.
To get started, see http://support.ptc.com/help//creo_hc/creo30_pma_hc/usascii/index.html#page/data_exchange/autobuildz/...
Here is a pretty good youtube Video
E12 CREO Parametric 2.0 DWG - DXF conversion - YouTube