It can be done from any PC that can show the Outlook calendar on it's screen.
You need a video card with a suitable output, either video or svhs (a mini-din plug normally) or even a VGA output if the projector has this facility - and of course a cable to go between the two. The VGA option will give you the best quality display.
The graphics card driver will have to incorporate a facility to feed out to a second monitor/TV, of course.
An alternative is to get a second graphics card fitted to the PC - and then you will require a projector with a VGA input.
Windows supports multiple monitors, so you can have the Outlook display on whilst you continue to use the PC on it's regular monitor.