There is a step by step description for CMSimple_XH 1.5.x: http://cmsimpleforum.com/viewtopic.php?f=4&t=5719 and another for CMSimple_XH 1.6.x: http://cmsimpleforum.com/viewtopic.php? ... =40#p39249.
If you're still working with another CMSimple(_whatever) version, you should upgrade anyway. If you're working with CMSimple 4.x.y, the solution for CMSimple_XH 1.5.x might work--I haven't tested that, however.
clean url does not work
Re: clean url does not work
Christoph M. Becker – Plugins for CMSimple_XH