Looking for path tokens to install flash panels

Hi

I am trying to build an MXI description file to install flash panels under the following paths:

             For WINDOWS XP/7/VISTA: <drive>\Program Files\Common Files\Adobe\XMP\Custom File Info Panels\3.0\panels

             For MAC OS: /Library/Application Support/Adobe/XMP/Custom File Info Panels/3.0/panels

Unfortunately in the CS5 EM documentation there is no viable access to those paths. Any token returns those paths. I dont' think I can use the full path directly because in Windows case I don't know the drive where Windows is installed. In the MacOs case may be feasible to use the full path?

Is there another way to obtain the Common Files/Library path into the MXI file?

Thank You for the help!

Massimo Novi