adfree can you post your version of 5.64 here? Thanks mate.
This modified version of 5.65 is nice. Looks like "Xenon" cleaned up the interface and the layout is nicer. For those interested, you can do this using Resource Hacker. As for containing viruses, modding a program doesn't inject anything. Often it's simply a packed .EXE file that the virus scanners detect as a virus. But in reality often it's a false positive and lazy scanning, as they detect it's been packed, and then just assume it's a virus/trojan.
As for this particular modded 5.65, as to whether it contains a virus, it came up clean when I scanned it at my end.