I recently got both magister and SirCam. McAfee cleared the magister one (unfortunately not before I opened it) and Symantec (Norton) had a stand alone free download that cleared out the SirCam (again, unfortunately...etc.) The neighbor who sent the SirCam had a friend recommend a free download of a firewall that seems to be doing very well. The address is (somebody blue clicky it for me, please):
www.zonelabs.com/za_download_1.html