Thanks Dave!
Don't know how you were able to chase down that source (let alone knowing that new driver was available) but I'm glad you did. Surprised that GRE does not have it or a link to it on their support page. As of now, cable works fine with WIN-500 and TRUNK88 on my VISTA laptop. I haven't had a lockup problem with the old driver with WIN-500 and I have monitored at times for more than 12 consecutive hours, but I HAVE had TRUNK88 lockup several times before I found out about and installed the new driver. Will post about it if a get another lockup.
Ron