Hello,
NI-IMAQ version 2.6 is fully compatible with LabVIEW 6.x. NI-IMAQ driver is an image acquisition driver and it has all the functionality required for acquiring images from an external video source through National Instruments frame grabbers.
In order to do image processing, such as performing operations on saved images from the hard drive, you will need IMAQ Vision image processing libraries.
Hope this helps!
Best regards,
Yusuf C.
Applications Engineering
National Instruments