As this laser beam was situated about 30mm from the actual cutting beam, I needed to measure the offset in both the X andY directions and then use a feature in the software to tell the laser to move to a new spot before starting its program. After a couple of tests and minor adjustments, I was able to get the starting point to within a mm. A bit more tweaking could get things very close but this is more accurate than what I require at this stage. For really accurate jobs I would construct jigs.