wow....havent seen this in a long time. You must be using a very old verion of ptle. Probably 5.0 or 5.1.
Get the free version here:
http://www.digidesign.com/download/dverb/
You can upgrade the AMIII with softwareversion 6.1 for winXP for $75
or 5.3.1 for winXP for free (probably) if you have the AMIII registered.