You can fit the Canon 1.4X TC to any Canon lens 135mm or longer. IS will be maintained with any lens which has it. You do however lose 1 stop of the effective max aperture of your lens.
Autofocus is the tricky bit, and it depends on which Canon body and lens combo you have whether it will still AF with the TC fitted.
1 Series bodies will still AF as long as the new effective max aperture is not smaller than F8
All others, 300D, 10D, 350D, 20D, 400D, 5D, will only autofocus as long as the new effective max aperture is not smaller than F5.6.