[Molvis-list] How to superpose two molecules in a molecular viewer?

[Julio Cesar da Silva]

I have a doubt about how to superpose two molecules in a molecular viewer. 
I need to superpose two protein structure in a spacefill representation. I 
would like to show one of them with semi-transparency. I have tried to do 
this in the softwares Rasmol and Pymol, but I could not. I would like to 
show both of them at same time and can see both. So, I would like to show 
one semi-transparent and the other one normal. Please, does someone know 
how to do this? Could you help me? Thanks.

Júlio César