REQUEST for 3D modelling Software

[jan morren]

Hello there,
I'm working as a systemadministrator at the Laboratory for Molecular Cell
Biology at the university of Leuven (Belgium).
We're looking for 3D Modelling software to view and edit molecules, etc...
We already are awair of things like RasMol and Chime.  But those are only
for viewing in Internetwindows.  The thing is that we need to add stuff.
We are working with PowerMacintosh computers with MacOS 8, soon with MacOS 8.1.
Thanks in advance for taking effort in this matter.
Jan Morren, 
jan.morren at bio.kuleuven.ac.be