I have just had confirmation there are USB drivers available only as per post
below.

Download the driver from elotouch.com (
http://www.elotouch.com/files/unrest...s/sw600071.exe ).
Unzip the driver to the VISTA machine.
Run EloSetup.exe from the unzipped files.

Note: Do not run EloSetup.exe from the zip. You must unzip the download to
the VISTA box - and then install from the local files. The unzip location
does not matter.

Note: If the USB from the TouchMonitor is hot-plugged, VISTA will crash.
This is due to some incompatibilities with the XPu driver and VISTA.

Elo is planning to release a fully compatible VISTA driver soon (April '07)