I am having exactly this problem with both a DAQcard 1200 and DAQcard 500 on an "out of the box" HP Pavillion 4100 with a celeron running XP SP1. It appears that the serial number is not reading so it appears to be related to another app question about erroneous readings and PCMCIA socket numbers...
O2Micro OZ6912 cardbus controller, Microsoft 5.1.2600.0 driver, NIPALK,sys 1.5.6f0 driver