Well, all I can say is: 1. Don't use Internet Explorer, use Mozilla or Opera instead. 2. Get a good software firewall. (TINY Personal Firewall, BitDefender, Norton, ZoneAlarm etc.) 3. Get a good Virus scanning software (Norton, McAfee, F-Secure Antivirus, AntiVir, BitDefender etc.) 4. Get Spybot Search & Destroy + Ad-Aware.