Go to your registry.
Delete this key: HKLM\software\trendmicro\pc-cillin\system
BE CAREFUL AS YOU’RE DEALING WITH THE REGISTRY. I HIGHLY SUGGEST YOU EXPORT THAT KEY FIRST PRIOR TO DELETING.
Go to your control panel, add/remove programs, click on the Trend Micro PC-cillin Internet Security “Remove” and be done with it.
Toodles.