When asking for technical help at the very least let us know the version of firmware you are running.Cliff's Calibration (Mapping) Guide is a MUST READ: http://www.vemssupport.com/forum/index.php/topic,97.0.html
I am developing an arduino based custom lcd display (and maybe logger) which connect to the vems serial port, Maybe it will be cheaper solution than vemsgauge and will work older firmwares...
I will take:)I have some remained shop post terminal lcd with nice big characters (2*20), but it works with any hd compatible lcd char display. And arduino has some library for pixel lcd-s too. Very flexible platform:http://arduino.cc/en/Main/Hardware