Hey Tchaou,
I believe your question has been answered on your other discussion forum post:
http://forums.ni.com/ni/board/message?board.id=200&message.id=13085#M13085. Read Vudoo's explanation on how to do this. There are really two ways to do this, but his second suggestion, which explains to follow how the Tutorial 1 (and Tutorial 6 - both for VBAI 3.0 on a CVS) performs the Simulate Acquisition, is probably the easier way to go. The reason I suggest doing it this way is because you can test the code on your computer, but then when you run it on the CVS, it reads the images that are on the CVS without having to change the directory on the step.
Also, in the future, please try to keep the same (or similar) questions on only one post instead of multiple posts. Having multiple threads with the same question makes it difficult for others to find your questions and answers if it is in multiple threads. I hope this makes sense. Thanks, and have a great day.
Regards,
DJ L.