Before I spend time doing a Joom plugin there is no existing one that would rewrite 1.0 non sef url's to 1.5.18 default sef url's correct? Below is sample condition.

redirect

content/view/417/1/

to

/movie-reviews-mainmenu-47/40-romance/417-camille-with-james-franco-and-sienna-miller.html

.htaccess entries would be fine as well just keep in mind that the websafe names are db driven.

Thanks