Change all your passwords
1] Change your Windows Account Password and the passwords of any other Windows' accounts on this computer
2] Change the password that accesses the router.
3] Change the SSID wireless password in the router.
4] Ensure you are using WPA/2 security and not WEP security for this wireless connection.
5] Ensure your firewall is running.
I have a Toshiba running Vista. I have the latest SP on my system. I have had issues with others who had been fixing my computers and now tapping into my computer system to change the configuration on the system and the router. What are the security measures or configuration settings that I can change to prevent those others to continue to tap into my computer? They know my Tosiba IP address. Can they do a ping and somehow log into my computer anymore? What are the settings I should check on my computers? ....