Real-Time data to array

Hello Everyone,
I am trying to create a spreadsheet of 500 columns and 1000 rows.
My program consists of real-time data streaming through the com ports (VISA), running in a continuous while loop. I was hoping someone could help me with the following:
1) How do I convert point by point data into an array format?
2) How to I set up iterations and loops in order for the program to collect 1000 samples of data and then switching to the next column (switching columns 500 times)
3) How do i take my 1000x500 array and write it into a spreadsheet?

Most examples I find to create rows and columns of arrays use random number vi embedded INSIDE a for loop, then auto-indexing it. However how do I embedded my real-time data (present inside a while loop) into a for loop (that's why I am unable to follow those examples).

I am fairy new to LabView. I would be great if someone could help me out because I have tried countless ways to create my spreadsheet.

Thank you!