How to remove RoboPDF menu from MS Office 2003 application menubar

I was trying RoboPDF a couple months ago. When I had it uninstalled, there's still a RoboPDF menu persisted in Office 2003 application toolbar. Here's a magic tip to get it out:

1. Download RoboPDF cleaning tool for free.
2. Run it, follow the instructions, then restart your PC.
3. Congrats! You're now free from that annoying menu.