mailDoc and File Names

I use mailDoc on a "submit" button. Users fill out the forms and submit them via Reader 7. The resulting file name of the pdf looks looks as shown below.

Request Form.pdf - Adobe Reader.pdf

I'd like to prevent the " - Acrobat Reader.pdf" portion of the file name. Any ideas on how I can do this?

Note: When the users were on Acrobat Approval 5, " - Acrobat Reader.pdf" was not added to the pdf file name. This is something that began with Acrobat 7.

Thanks in advance for any ideas on this.