en-US.jar:
    locale/en-US/global/nsHelperAppDlg.dtd (helperAppDlg/locale/en-US/nsHelperAppDlg.dtd)
    locale/en-US/global/nsHelperAppDlg.properties (helperAppDlg/locale/en-US/nsHelperAppDlg.properties)

toolkit.jar:
    content/global/nsHelperAppDlg.xul (helperAppDlg/nsHelperAppDlg.xul)