After my experiment with FSIS, I thought I would try NIS 2007, as several people have recommended it, so I downloaded the Trialware version from the Symantec website, but once installed, it says that the trial period has expired, so it's useless. I haven't installed NIS 2007 before, and the last Norton product I used on my PC was NIS 2005, which I removed with the Norton Removal Tool. I have also removed NIS 2007 with the NRT, and reinstalled, but still it says the trial period has expired. I don't want to purchase the thing, and then find that it slows down my system - I just want to compare it to KIS 6.0, but will buy it if I like it. Any ideas as to a way round this, would be appreciated. Simon.