Sheridan 3D Controls or Threed32.ocx

Hi all
Im having a little bit of a problem, I am using windows vista home and visual studio 2005.
I have installed visual studio 6 so that I can convert my old programes over to visual basic 2005
every thing installed fine and some of my vb6 programes worked, I have one in paticular that does not work at all im haveing problems with Sheridan 3D Controls or Threed32.ocx. Cant get them to work with Vista, I have even used EMSA Register DLL Tool nothing. The only control im using is SSRibbon
it is used to switch from one mode to another.

Help please
Ed