DWG import pivot alignment question

[tsimon]

Simple question: if I import a spline rectangle from a dwg that is rotated some arbitrary number of degrees from being aligned with my world axes, the local pivot is aligned to the world axes on import, too. Is there an easy/best way to accurately snap the local pivot so that it is aligned with my rectangle's 90 degree angles? I'm working with more complicated objects than rectangles, but I figure this is the easiest way to describe it.

 

Thanks!