Thanks for the link. My AV is up-to-date, and I downloaded and installed all MS security updates last week, but obviously you might as well be p*****g in the wind as try to have any security with Windoze. I used Spybot to delete the DSOexploit thingies, so fingers crossed. My nephew, who's not very computer savvy, has an unusable pc at the moment. He can't even go online any more, his browser has been taken over by porn. I think it must be one of those 'fun' coolwebsearch things. Haven't a notion how to get rid of it, he has Win98, so it's not possible to go back to an earlier configuration like it is with XP.