Ok ! I know what a trojan/worm is and i know what a zombie is and that, but i don't know what certain trojans e.t.c try to do ? eg,change settings or key logger ? if it's polyformic can it restart disguised as another icon/file ? I ask because today my AVG stopped a virus, Trojan horse Generic12.ACVL, that tried to attach itself to my Adobe reader 9 setup.exe file through the Adobe Installer pack. It's in the vault so should be safe ? Anyone familiar with this and know what its prime purpose is ? Thanks !!! Doodlebug Mod PLEASE submit my thread, it's xmas and i want safely use my computer over the festive period Thanks and merry xmas !!! Just posted this thread, thought mods had to approve in general section ?