-AC_CHECK_PROG(PERLDOC,[perldoc],[perldoc],[no])
+
+dnl XXX Other desktop environments?
+AC_CHECK_PROGS([OPENER], [gnome-open], [no])
+
+AC_CHECK_PROG([HIVEXREGEDIT], [hivexregedit], [hivexregedit], [no])
+
+AC_CHECK_PROG([PERLDOC],[perldoc],[perldoc],[no])