More detailed steps follow:
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TouchCopy allows users to copy Music, Photos, Contacts, Messages and loads more from iPod, iPhone and iPad to your computer. So, it goes without saying that TouchCopy will need to detect your device.
If TouchCopy is unable to detect your iPod Touch or iPhone on your PC it may be because the required services are not currently running on your PC. This article describes how to check for and fix this problem.
Press the windows button, and type "services" in the "Start Search" box. Click the "Services" item in the search results.
Open Control Panel->Administrative Tools->Services
In the list of installed windows services that appear, look for "Apple Mobile Device". The status of this service should be "Started". If the status is something else, right click on on the services name and select "Start" from the pop-up menu.
If "Apple Mobile Device" does not appear on the list, you will need to re-install the latest version of iTunes from http://www.apple.com/itunes/
Restart TouchCopy and then connect your iPod, iPhone or iPad.
If you continue to have problems, please contact our support team via our online helpdesk.