Yes, the first place I went !
Very confusing list of drivers, the number that came with mine looks like it is for VISTA/7, there is no driver number for XP, and nothing in the manual (on the disc and on the site) to indicate which is which.
Harking back to my days in the business, I'm reminded once again how documentation is always considered last....if at all.
Incidently, WIN XP offers a UPS page under Control Panel/Power Options, but no way I can find to make it work with anything other than a make of UPS which isn't the one I have.