Hello RMIT,
Unfortunately by asking someone to write your code for you, you probably will not get very much help. Also, you can almost never expect someone to email you directly. By posting a solution to the forum post, not only does it get your problem solved, but it also helps other people in the future who might have your same problem. Your best choice is to ask for advice on how to solve the problem yourself, that way you and others will learn for the future.
<steps off soapbox>
As for your issue, it's hard to determine what might be going wrong without some more information. It seems that your code is actually reading data with no problem. Unfortunately it may or may not be the correct data. What data do you expect to get when you read this file? What does the original graph look like in signal express? Finally, how is your express VI configured? This will help us to get an idea of what might be going wrong and how we can solve the problem at hand.
