I'm not sure I quite understand your question. From what I understand, you are trying to complete the following steps, in order:
1. Read in multiple spreadsheets of data.
2. Perform calculations on this data.
3. Write the calculations to a different spreadsheet file.
At which point in this process are you having trouble? There are multiple examples if you go to Help>>Find Examples and search for spreadsheet. If you are trying to prevent the user dialog that asks which spreadsheet you would like to open, you can create constants on the block diagram with the file names.
Janell R | Applications Engineer
Message Edited by NIJanell on 03-12-2007 03:06 PM