Scheduled Reports Email questions. Format of XLS, Content of Email...

Scheduled Reports Email questions. Format of XLS, Content of Email...

Q1. The .xls file that is created and sent via email is not easy to work with:

- second row needs to be deleted in-order to use column filters, 
- number fields need to be converted to Number format from Text format.

How can I change this?

Q2. Can I create text for the email that is sent out in the scheduled report email.
Currently it is "Zoho Dear Sir/Madam....."  would prefer to use my own text.

How can I update this?