My autoplayfeature is not working after installing Powerdvd 8 ultra???

I have installed powerdvd 8 ultra.I have other dvd softwares like windvd 8,WMP 11 etc....But after installing powervd 8 ultra when I insert a dvd it starts playing it and if I open with other sftwares PD 8 would have also staryed in the background.B4 that Autoplay option will come.How can I change it?????????