If Oracle won't make a PCLinuxOS prebuilt rpm like they do for other distributions then we will provide a way to get the Non OSE version installed for our members.
What can I say! Tex, you're a Diamond Geezer!!
I run the script on a clean install and it went fine. Only one error message (full Konsole output on attached txt file)
Verifying archive integrity... All good.
Uncompressing VirtualBox for Linux installation..........
VirtualBox Version 3.2.2 r62298 (2010-06-02T14:46:45Z) installer
Installing VirtualBox to /opt/VirtualBox
tar: Record size = 8 blocks
Python found: python, installing bindings...error: invalid Python installation: unable to open /usr/lib/python2.5/config/Makefile (No such file or directory)
Building the VirtualBox vboxdrv kernel module
Building the VirtualBox netflt kernel module
Building the VirtualBox netadp kernel module
VirtualBox has been installed successfully.