Question : Create PDF in black and white, using Ghostscript

I didn't think this would be a difficult question, but I seem to be having some difficulty figuring this out.

Is it possible to send a color document to the PDF driver and end up with a black and white document?  This is what I want to happen, but I can't seem to figure out how to make the PDF end up in black and white.  The reason I need the PDF's in black and white is because I am sending them via internet-based faxing, and when I send a color PDF document to my internet fax service provider, the resulting fax on the other end comes out too light.  If I send it in black and white, everything is fine.

This is the code that I am currently using to create the PDF:

Public Function GhostscriptIt(OutputPath)
Dim gsdir As String, gsscript As String
gsdir = "Z:\General\gs\gs8.51\"
gsscript = gsdir & "bin\gswin32c.exe -dQUIET -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=" & _
               Chr$(34) & OutputPath & Chr$(34) & " Z:\General\gs\output\TempFile.ps"
ShellRun (gsscript)
End Function

This code takes the input file (Z:\General\gs\output\TempFile.ps) and then converts it to a color PDF.  I want to create a B&W PDF.  Hoping someone has some ideas for me.  Thanks.

Answer : Create PDF in black and white, using Ghostscript

Hi Daniel,
either
Change your PS printer from Color to another B&W PS printer,
or
Don't add colors to your Report.

I don't know if you could control the Color Printer driver, and instruct it to print B&W instead of Color.

jaffer