FRODO and DNA software

 I have two questions concerning software that I am trying to
 1)  Is there an SGI version of FRODO, and if so, who should I
     contact to obtain it?
 2)  Does anyone know of any programs that can build non-standard
     DNA conformations?  I am interested in unwound backbone
     geometries that can be used to model intercalation, as well
     as the ability to generate propeller twists, tilting, and sliding
     deformations of the base pairs to use as starting points for
     minimization or dynamics.
 Please send responses to me, and I will share them.
 Thank you,
 Robert Pearlstein