as a rule, when i recieve any kind of file d/l... i use a hexeditor to open it....
reason being... if it is a program designed for a certain purpose.... its easy to
find something dealing w/ that purpose.... if you cant find nothing that reflects
what you are supposed to be d/l'ing.... then it is prolly some new worm/virii etc..

of course i keep my anti virus up to date daily, and have my computer set to
automatically d/l critical updates daily.... but ya still never know.. what is
around the corner. so common sense a good anti virus, up to date patches..

and the good ol hex editor..... makes for a good tandum