Do I need to register Trend Micro PC-cillin Internet Security 2007 after re-installing it?
You do not need to register PC-cillin Internet Security again if you have previously registered and re-installed it using the same serial number. The program will automatically verify that your serial number has already been registered and will display the expiration date of your subscription. If you had not registered PC-cillin Internet Security before re-installing it, you will need to register it online to be able to receive the latest program updates.