Excel 2003 :: Convert PS File To PDF?

Every day I create many Excel reports that I manually save as PDFs for distribution to my stakeholders. I'd like to automate this process using a macro. I've seen the following code online and have attempted to use it, but receive an error in the Dim MyPDF line of code indicating that the user-defined type is not defined.

I'm using Excel 2003 and Acrobat Distiller 8. I have no problem creating PDFs manually

Code:
Sub Create_PDF()
Dim tempPDFFileName As String
Dim tempPSFileName As String
Dim tempPDFRawFileName As String

[Code]....