It is easy. Open the library (you want to add the component to) in your design project, then expand the cache, drag and drop the component into the library.
in a dsn, you will find library docunment,press your rignt piont,and then add a lib file ,go on pressing lib file,right piont of your mouse,then can creat new part........
if you want to gen part libs to new olb,
press dsn,then tools/generate parts.........
only way to make a new part is by making and storing it in a library, for that
1) open new library from file->new project-> library menu
2) selct .olb from the tree window and right click to add new part
then draw the part and save it.
3) open a new design project and place new part, add the library you made in the dialog then place the part...