Thanks, Tomster. That was my guess, but I needed to be sure. It was possible that the "W enhanced" mode was for future 'books, or just cruft code left in the driver.
Icruise, W enhanced trackpads speak a slightly different protocol than the standard pads (and get some minor features as a result). I'm working on a project at that level and wanted to make sure that I wasn't coding to a nonexistent piece of hardware.
Bas