The PDA module does support some NI DAQ hardware (I believe the PDA module includes DAQmx base), but I wouldn't go with CE just because of its RT capabilities - LV PDA is far from being on the level of the PC version and it very likely will not give you what you want - for example, I ran into a problem where the industrial PDA I wanted to use (which has CE.net, not PocketPC) does not like what LV uses for timing - apparently its power management causes it switch to a low CPU usage mode and the result was that everything would take much longer than it is supposed to. This could probably have been solved using EVC, but not in LV.
If XP embedded can run the desktop version of LV I would go with that.
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