babysabi ~ # emerge /usr/portage/distfiles/opera-9.50-20071024.2-shared-qt.x86_6                                                                            4-1643.tar.bz2
Calculating dependencies |

!!! '/usr/portage/distfiles/opera-9.50-20071024.2-shared-qt.x86_64-1643.tar.bz2' is not a valid package atom.
!!! Please check ebuild(5) for full details.
!!! (Did you specify a version but forget to prefix with '='?)