From Pocket Science:
The Clip PRO Desktop Component (CDC) allows you to exchange clipboard information between your PC and your handheld device. The CDC operates as a standard Palm conduit, and also as a Windows System Tray item. The conduit handles the trasfer of data between PC and handheld, whilst the System Tray item handles user interactions.
The CDC icon in the System Tray allows you to copy text from Clip PRO into the standard Windows clipboard - this is done by clicking the icon, seleting Export, then clicking the item you want to transfer. The text can then be pasted into any standard Windows application.
To transfer text from your PC to your handheld simply copy the desired text, click the CDC icon in the System Tray, then select "Add Clipboard to Clip PRO". At your next HotSync the text will be added to Clip PRO just as if you had performed the operation directly on your handheld. The new clip will go into position 1 at the top of the list, and all other itesm will be shufled down - removing the last item from the list. Please note that currently CDC only supports one transfer at a time - so the only clip that will be transferred to your handheld will be the last one added via the CDC icon. This will likely be increased in a future version.