New to me. It hogs all CPU resource in Windows XP, tries to hog all memory in Windows safe mode, doesn't appear in DOS cmd mode. Very resistant to the usual (free) anti-virus software. The Geek Squad quotes $199.99 to fix it, but no way is that reasonable. I'm writing software to copy files directory by directory (10,700 count in my case), then will re-install XP. Anyone have a better solution?