PAL version 1.0 (Process Assessment of the Learner) software is compatible with Windows 95, 98, NT 4.0, 2000, and Windows ME operating systems. 
Windows XP: PAL 1.0.2 is compatible with Windows XP and previous Windows OS. If you own version 1.0, you may contact the Technical Support Center at esupport@pearson.com to request the revision. 
PAL hardware requirements:
Minimum System Requirements 
    - Windows 95/98/2000/Me/NT 4.0 Workstation Operating System
 
    - 100MHz processor
 
    - 32MB RAM
 
    - 2 MB video card capable of 800x600 resolution (16-bit color)
 
    - 75 MB free hard disk space when installing The Psychological Corporation Assessment Center for the first time
 
    - 25 MB of free hard disk space if The Psychological Corporation Assessment Center has been installed with another product
 
    - 50 MB temporary disk space for diskette installation
 
    - Internet Explorer 4.0 (If this is not installed, you will need an additional 65MB of disk space to complete the installation)
 
    - CD ROM drive
 
Recommended System Requirements 
    - Windows 2000 | XP | 2000 Workstation Operating System
 
    - 166MHz Pentium processor
 
    - 64MB RAM
 
    - 2 MB video card capable of 800x600 resolution (32 bit color)
 
    - 75 MB free hard disk space when installing The Psychological Corporation Assessment Center for the first time
 
    - 25 MB of free hard disk space if The Psychological Corporation Assessment Center has been installed with another product
 
    - Internet Explorer 4.0 (If this is not installed, you will need an additional 65MB of disk space to complete the installation)
 
    - 3 ½ inch floppy drive
 
    - CD ROM drive