To download JSMF Bridge from JoomlaHacks, you must register to the forum first.
If you have registered, just go to this link
www.joomlahacks.com/component/option,com...Itemid,94/board,47.0
there you can find Wolverine (the developer) attached the Bridge.
Now, JSMF Bridge (by wolverine) validate XHTML and have option to Include CSS from SMF Theme to Joomla or not.