I have a huge amount of data (more than 25 Mb) that I need to keep in an
Excel-2003 file. I am going to add 25 Mb of data to this file every month.

Is there a limit to the file size in Excel-2003?
At what file size can you expect a degradation in the performance on a 1.5
GHz processor with 512 MB RAM?
Is there a limit to the number of work sheets that can be created in
Excel-2003?

Thanks
Sam