How to change attachment file name

Hi,

I'm using VB 6 and Crystal Report 9.0.
User can send some reports to their customers via email. I'm not showing the ExportOption Dialog box to the user. All the values of the options are datebase driven. I'm exporting the report in .doc format.
Now the problem is that the attachment file name always showing "untitled.doc". I'm unable to change the file name to "Quotation.doc".
When i'm sending the report using the ExportOption dialog box then there is no problem (file name is coming as Quotation.doc).

Pls help.