How to save, combine and retrieve the images on hard drive using IMAQ in labview

Hi,
I am using NI-1426 frame grabber to capture images of 800x1 resolution with 270 bands. Actually, I want to capture images from camera and saving into the hard drive continuously so that my buffer does not run out of memory.  After capturing say 100 images of same resolution (800x1), I want to combine all images into ENVI format and then again save on hard-drive. Please guide me how can I do that?
Thanks
Sidd 

Hi Jeff,
Let me explain it in little detail.
I am using PCI NI-1426 frame grabber to capture the images at particular frame rate. Ni-1426 has 2 ports i.e. 26 pin camera and 15 pin triggering port. I am sending the pulse per second (pps) signal from gps to the triggering port. I want to check for the pps signal through the frame grabber 15 pin port. Please tell me how can I listen to a trigger through a frame grabber in labview? As I have connected pps signal on pin1 in 15 pin port, I want to read that pin. or how can I read a particular  pin data in labview? I have already checked that I am getting pps signal through oscilloscope.
Thanks
Regards,
Sidd 

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