As mentioned earlier, I upgraded XP to Vista. As I was cleaning up, I noticed that Windows Defender was on the list of installed programs. Reading that Defender is part of Vista, I uninstalled it. Now Vista has its shorts all in a bunch because it’s downloading updates for Defender but it’s not there. Ok, thought I, I’ll just reinstall. Oh, no, can’t do that because Defender is part of Vista, so the installer won’t install it. Hmmm…. As yet,short of reinstalling Vista.