Thanks for your post. There could be several reasons why your NI IMAQ 1394 drivers are not working with LabVIEW 8.0. NI IMAQ for 1394 must be activated in the NI License Manager (witha green square) to function properly. Also, depending on the order you installed your software, there may be a few steps you need to take to get your 1394 IMAQ drivers to function properly. Please refer to the following Knowledge Bases to see if they are of any help:
Let us know if you have any other questions!