NI-DAQmx Base 2.1 supports several products on Pocket PC 2003 and Windows Mobile 5 with LabVIEW PDA 8.2. Here is a list of supported hardware: PCMCIA E-Series cards, Compact Flash CF-6004, USB-600x and USB-6501. Take a look at the readme (in the link), or re-post if you have further questions.