Reader help required

Hi there
I hope this is the correct place for this message.

My problem is as follows
We have an application that allows users to create a PDF file.
When they try to open the PDF from within our application it doen't work in Acrobat 8 if there is a space anywhere in the pathname or filename. If there are no spaces it works fine. It always worked fine with previous versions of Acrobat
An example of the command we send is

Start program normal (C:\Program Files\Adobe\Reader 8.0\Reader\AcroRd32.exe C:\Client Docs\Selco\Test.pdf)

Removing the spaces from file and pathnames is not really an option, neither is downgrading to version 7

Any help would be greatly appreciated

Martin