PC DoorGuard 4.1 - PC DoorGuard is a complete anti-trojan and I-worm protection solution in one package, PC DoorGuard is an extensive and thorough intrusion scanner that scans any media on your PC for backdoors and trojan horses. PDG easily removes any found Trojan with a click of a button, together with any elements it may have left in registry/system, files/memory. PDG also constantly monitors your system to prevent further infection, using a  weekly updated trojan database consisting of more than 2400 entries. Features include running trojan/process killing, registry editing, monitoring of open ports, on the fly checking all the files that are downloaded, received via email etc. PC DoorGuard has an easy to use Interface, extensive Trojan database & has weekly online updates. The advanced file manager allows deleting files, even if they are in use by other processes. There are a number of utlities which help you maintain your PC (socket utility, system info utility, regedit).