We recently implemented Zen for mostly the purpose of remote control. The help desk users complain that sometimes they don't see certain screens especially the windows when a software install is occurring.
I found a tid that said turn off video acceleration and it worked with a test machine, but when I tried this with a dual monitor (both portrait) with a Radeon x1300, the video went haywire. Black screens and XP wouldn't boot with video. I had to boot into safe mode and un/reinstall the video drivers.
I am wondering if anyone has any other tweaks for remote control. Our video cards are a wide assortment.