How can i use labview for communicating with pic18 microcontroller through usb port?

Hi all,
I want to make a DAQ card using pic 18 microcontroller which has a built-in usb protocol. I have the firmware of this
controller which will  make it as a usb device. How can i receive the analog voltages from this DAQ card in Labview? or i mean to say that how i can communicate labview with the Pic 18 microcontroller through usb port? I have also the
mpusbapi.dll file which is for Visual C++. Can i make changes in this dll file to make it compatible with labview?

Which labview version do you have. Up to labview 7.1 it was no USB raw communication options. I have heard it did not work well in 7.1, but from 8.x most of the errors were fixed.
Here is a link it should be useful http://forums.ni.com/ni/board/message?board.id=170&message.id=340676&query.id=365864#M340676
Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
(Sorry no Labview "brag list" so far)

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