You didn't tell what OS you have.
We purchased the Video Advantage ADX (can be found here: http://turtlebeach.com/site/products/videocapture/vidadx/producthome.asp). We double checked to make sure that the computer we're installing it on has all of what the manual said is needed for the card and the accompanying software to work. We followed all of the steps - so far so good - until we got to the point of installing the powerdirector (another bit of software included). That wouldn't install. It instead gave the message that it "can only be installed on a designated system".
Since all of the requirements are met (all of the ones Turtle Beach indicated for this package), we don't know what else is wrong nor what it means by "designated system". Any help would be great!