I think, but dare not say I'm sure, that I have nearly solved it. fortunately task manager gives me the opportunity to identify the process of every application, and I finally tracked it down to some things called installshield, Idriver, and another evil called getmail; installshield I have uninstalled but getmail and Idriver have proved a bit more troublesome. a search of all files and folders can find neither of them; likewise revo. it seems that installshield lives in common files and, having found it, I uninstalled it using perfect uninstaller which, by right clicking on the thing has a force uninstall option. it seems that I am not alone in hating Idriver and getmail, which are not listed under installed prgrams notwithstanding that I can find their processes and stop their tree. that something has a process but is not listed anywhere as a program puzzles me.