Installing a new arm

Hi, I am thinking about buying a Audioquest arm to replace my Systemdeks OEM arm (Profile). Can anyone tell me how do I go about doing this? I was told this should not be too difficult and I am trying to save some money- so I will do it myself. I was told the Audioquest arm will need a new mounting hole in my arm board...or do I make a new arm board myself? How do I determine where to drill the mounting hole? Thanks for the help.