What exactly do you want to do? We will need a little more information.
Just search the forum and you will find a lot of information regarding projector control.
Daniel
P.S.: If you want to cut the cable the axe is a good starting point if you want to communicate with the projector connecting it to a PC using a RS232 cable will be a good start.
If your PC does not have a RS232 Port anymore, get a USB to RS232 or if you want it on a Network and RS232 Terminal Server. (
https://www.perle.com/products/rs232-to-ethernet.shtml)