GDay All,
Ok I have installed the newer version of Avast Pro and apart from a compatability warning, Avast Pro is functioning well.
Although I seem to now have a startup delay whereby, the red circle appears for about a minute or so before avast starts. This is not a serious problem, as the rest of the system is still starting. I have seen this before under XP Pro, but I was usually able to sort it out by running BootVis. Unfortunately, BootVis will not run under Vista
BTW... Thanks for the welcome Xmas, I'm glad to be here