making a digital camera act as a webcam

making a nikon coolpix 775 digital camera act as a webcam?

how do i do it?

i simply installed the software that came with it. when i plug it in to my comp (winXP) it automatically detects it and opens up the picture transfer program.

thereis a section under control panel for scanners and cameras, it has a nikon 700 listed, where could i find the 775 drivers?