Make your Windows 7 full secure

Hi Guys,
I am using window 7 at home. Before few days my system is in intruder's Control. Can you tell me how can I make it fuller. I have registered antivirus and registered window. Also both fully updated. Tell me some more so now cyberpunk can attack it. I am also using ZoneAlarm, Hide My IP and Anti Infiltration. Can anyone tell me some good software for Telnet who can enable Telnet server and telnet client automatically I try to do this manually but I can't do this.
Thanks.
