Ok, so, I feel like an idiot.
Before, when I'd been trying to install the driver, I'd disabled my antivirus like I was told to, and even disabled my firewall for good measure... Today, I did my routine check of the firewall log, and noticed a couple entries in the "Defense" portion referencing sandboxing a couple installers. I checked, and sure enough, it had sandboxed the driver installation. So I moved the files to "safe files", shut down the firewall, and tried running the installation again, and it worked. The settings programs showed up in Start/All Programs like it was supposed to, the tablet started mapping the screen instead of being a giant touchpad... and everything works fine! What I don't get is why I didn't get any alerts that something was being sandboxed... *confused*