From your description of the workbook, I would suggest determining what the BlackBerry user wants to see and then producing a report sheet that can be sent - perhaps with formulas converted to values.
If the workbook is large, it is not going to be that easy viewing it on a monitor - let alone a BlackBerry.
The solution that I implemented (too complex to describe the functionality here in detail) allows users to send email requests for specific data to the Data Warehouse that then automatically sends the report either in the body of the email or as an attachment.