My laptop's DVD drive appears to have died, so I've had to install the demo version of PA Soft instead, not sure if that would be the same thing or not. can't remember if it was there in Device Manager. You can install 1.1 or 2.0 after 4.0, it doesn't overwrite. Most of this software works with XP with no problem at all. I run Windows XP SP4 (unofficial) with no network connection in a Virtualbox VM and tell it to pass the USB connection through to the VM. Are the drivers for the cable installed properly and detected within Device Manager? More than anything that looks like a driver issue if anything.