**<rant>**I bought a Wacom Graphire4 4x5 tablet for my daughter this week. According to her, the driver and bundled Photoshop Elements3 and Corel Painter Essentials 2 installed with no problem on our Windows XP system.
I however wasted 2 hours attempting to install the bundled apps onto Windows Vista on my laptop this evening. In the end, after googling around a bit, I made an educated guess that Vista just hates the Microsoft Installer packages wrapping the vintage 2004 Photoshop and Corel apps. Also, it appears Adobe has no intention of supporting Vista, so I won't hold my breath waiting for Wacom to upgrade the bundle...
The Vista version of the tablet driver installer freshly downloaded from the Wacom site *also* seemed to hang up partway through the install process. In the end, it appears to have installed itself, however I now have *seven* annoying popup messages to dismiss when I logon to Windows, each popup informing me that it couldn't find a driver for this or that USB device - when in fact the drivers for the Wacom tablet and the Logitech wireless keyboard/mouse are installed *just fine*.
Speaking of the Logitech stuff, I still haven't received a satisfactory answer from them about the annoying popup messages, four months after I first complained about it on their support Web site. Well, at least Logitech attempts to listen to their customers - I found no such avenue for recourse on the Wacom site. Just fire off an email to them and hope for the best.**</rant>**