Sorry, I forgot about this thread and never made it back to post the info.
Here are the two "work arounds" for Vista:
Open a Windows (not Internet) Explorer window, right click on "My Computer" and select "Properties". Select the "Hardware" tab at the top, then click the "Device Manager" button. Make sure your datalogger module is plugged into a USB port (other end does not need to be plugged into the truck at this time). Scroll down to "Ports (COM & LPT)" and click the "+", you should have one listed as "USB Serial Port (COM4)". Right-click that one and select "Properties", then click the "Port Settings" tab, then click the "Advanced" button. Under "Miscellaneous Options" on the right, there should be a checkbox for "Serial Enumerator". Make sure that box is checked, then click "OK" on all the open dialog boxes to save it.
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The program needs to be able to run as an administrator.
To do so:
Find the executable (application) file. The path for it can be found by right clicking the shortcut icon then selecting properties.
Using the path, go to the actual file name, right click and select properties. Click on the COMPATIBILITY tab. Click the box that says "RUN THIS PROGRAM AS ADMINISTRATOR" then exit.
You should be able to click on the shortcut icon on your desk top to make the data logger start.