ISIS/Draw 2.5 Description:
This is an introduction to ISIS/Draw, a program from MDL that is free for non-commercial use. You can use it to draw chemical structures, and export them for viewing as 3D models. Instructions for exporting structures for 3D viewing are given on the RasMol page; see "Method 2" there. (Isis/Draw has a menu item called "View molecule in RasMol". It seems to not work properly, and we ignore it here.)