PC 3D viewer software for PDB data?

[Christopher Spry]

>..Brookhaven's web page mentions Rasmol, but I don't know what that is.

Have a look at: 
http://www.nih.gov/molecular_modeling/guide_documents/sw_index_document.html#custom_list_anchor
This is an ideal place to start your search for  PDB-related software that you want. You can run 
RASMOL with your protein over the web from somewhere there.
-- 
Christopher Spry.
cspry at sghms.ac.uk