Is there anyway to specify a PrintTo printer when spawning a process?

Question

What I Have

I am currently writing a program which takes a specified file and the performs some action with it. Currently it opens it, and/or attaches it to an email and mails it to specified addresses.

The file can either be of the formats: Excel, Excel Report, Word, or PDF.

What I am currently doing is spawning a process with the path of the file and then starting the process; however I also am trying to fix a bug feature that I added which adds the verb 'PrintTo' to the startup information, depending on a specified setting.

What I Need

The task I am trying to accomplish is that I would like to have the document open and then print itself to a specified printer named within the program itself. Following that up, the file should then close itself automatically.

If there is no way to do this generically, we might be able to come up with a way to do it for each separate file type.

What you Need

Here is the code I'm using:

ProcessStartInfo pStartInfo = new ProcessStartInfo();
pStartInfo.FileName = FilePath;

// Determine wether to just open or print
if (Print)
{
    if (PrinterName != null)
    {
       // TODO: Add default printer.
    }

    pStartInfo.Verb = "PrintTo";
}

// Open the report file unless only set to be emailed.
if ((!Email && !Print) || Print)
{
    Process p = Process.Start(pStartInfo);
}

How I'm doing...

Still stumped... might call it like Microsoft does,'That was by design'.