Mike.....
I have run out of suggestions.....other than you contacting MTU Support. I have Win 98SE and don't have Win XP to troubleshoot on.
I ran across this:
"ASPI Manager for Windows XP
Introduction
The Communica ASPI Manager for Windows XP is a fully ASPI 2.0-compliant implementation for Microsoft Windows XP. It provides an ASPI interface for both 16-bit and Win32 applications which require ASPI, such as scanning applications, CD-ROM burning applications, and the like.
Installing and Using Communica's ASPI Manager
Download and extract the installation program, provided below. After installation, your system will contain the Windows XP ASPI drivers and support components. No user interface is required. An uninstallation application is provided."
Information on the Aspi Drivers for Win XP Here:
http://www.communica.com/downloads2.html
Aspi Driver Download at this Link:
http://www.communica.com/thankyou.html