Hi Student.
One thing up front, always pre-scan a download before actually downloading it. Then do not run it, just save it, then scan it again (with avast, ClamWin free anti-virus, etc., then after you sure it is malware free open it, and then run to install. A nice extension to pre-scan your download links in IE, FF, Flock, Opera is the DrWeb anti-virus link checker, to scan the link before clicking to download to see if it is clean. Also look up the software so that it is not rogue software, for searching use Scandoo.com
polonus