How to change report name when attaching to email.

Hi All,

Can any one help me in changing the name of the SSRS report when mailing it to the customer.

For eg:

When I select the email option from  the print destination settings in a dialog box ,the report successfully get attached to the mail but with the name <Report name>.<Design name> .pdf which i want to replace with my own meaning full name for eg Quotation report.pdf.

Can any one tell how can I do this .

Thank You in advance.