You shouldn't be using IE6 any more, because it has severe issues with computer security which will never be patched, because IE6 is no longer supported by Microsoft - you should download IE7 ASAP. Firefox seemed to have issues with embedded Flash (which both GR and Ancestry is awash with) when I tried it, which is why I stick to IE7 (well, actually I'm now using IE8, but that's still in final beta test).