Well, thank you. I was able to slide the sensitivity bar to thorough after I got the new Vista-ish skin. (Thank you to creator) but the actual spot to click on thorough was just like the boot feature and was not highlighted. PLEASE hurry with 5.0 version! Boot-time scan has been a life-saver (at least a computer-saver) for me. Is the boot scan feature available for Vista 64 in the current professional edition? Thanks,Cindy