I'm working on a project in chimera that involves modeling the binding of a RNA-guided protein complex to a double stranded piece of DNA.  What I need to do is be able to is either match a DNA pdb to the existing RNA pdb I have or build one using the rna command in chimera.  I know there is a path command, is there any way I could specify that to build along a pdb I have already?  Or am I just barking up the wrong tree entirely?

Thanks,

Josh