Windows xp home sp3. Was working fine on this desktop until it got a virus, had to format drive & start from scratch. I've downloaded from cd & website (both run & save to desktop). When I try to open either editor or scanner, I get the hour glass for a couple seconds & thats it-nothing more. I have .net framework 3.5. Is there anything else I need to have other than that? I was able to download drivers, they show up in device manager properly.