How do i use my digital camera as a webcamera?

Check if the camera can be a webcam. If it can, install drivers for it.

go to google and ask them. i just no its a litttle pice in the back

Unless your digital camera has "streaming video" capabilities it cannot be a web cam. If it does have this capability the instruction manual may be helpful in how to plug the camera into your computer. Most likely through the USB port.

i dont think u can, unless its a camcorder