after downloading steps iges how to open it in creo 5
or File/ new part...
then intsert/share data from file...
you can look at web
Sometimes I try to open STEP or IGES files in Pro/E and can't see them. Pro/E refuses to show file names with spaces in them. Rename the file and replace spaces with '_'s or just delete them, then Pro/E will let you see them in 'file open' dialogs. Not sure if they fixed this in Creo though.