Hi, No you should be able to run the jaws 64 bit jaws with no problem as long it is v 11.0. Matthew On Dec 24, 2009, at 11:41 PM, <p.wildcat1234@xxxxxxxxx<mailto:p.wildcat1234@xxxxxxxxx>> <p.wildcat1234@xxxxxxxxx<mailto:p.wildcat1234@xxxxxxxxx>> wrote: Hi list this is kennty. Do I need a different licence for jaws 11 64 bit to run on windows 7?