On one XP computer, installing Itunes (this version) and QT Lite still did not permit the IPod Touch to be seen correctly. It was only seen as a camera. My solution was as follows. I downloaded the full Itunes from Apple. I used Winzip to extract the Apple Mobile Device Support installer. Installed that program and now Itunes can see see the Ipod. I can only surmise that the Mobile Device Support was previously un-installed.