[drkiraco]

I'll echo Eric's comments: the question isn't really relevant to the forum, but I'll answer it anyway. My thoughts

1) there may be a way to do this, but it's going to be hard. I think for the effort, just buy a board that has the proper sample rate to begin with. NI makes boards that will do at least 2 Gigasamples/s. Now they aren't cheap, but you get what you pay for.

2) If you really want to do it, just call up National Instruments and ask them if it's possible. In my experience the local NI sales reps are incredibly helpful. Just call up the main sales number on the website and ask them. Or ask them to give you the number of a local sales rep in your area. If you tell them that you're thinking about buying a whole bunch of boards from them, they'll be more than willing to help you find the right product for your need.

Daniel