MD8x_data2.cab help

I've unzipped this gauge file and was going to try to work it into other panels for different aircraft. What the gauge does is produce data that is displayed on a Vspeed card as a panel view. The original can be found here:http://efis.altervista.org/Samuli%20MD80.htmBasically this was programmed in XML for the MD83.I'm fairly new to reading XML but would like any input on the best way to go about changing values here to get the new Vspeeds for different aircraft. Basically just pulling in weights is what it does.Anyone?Thanks in advance for your help!