Available Printers

Here you'll see the list of printers available on you computer, or shared across your network. To monitor a printer, just place a check mark beside its name. 

Placing a check mark beside any other entry (for example, a Print Provider) will ensure the printers it contains will appear on the program's main window. However, a printer won't be monitored unless a check mark is placed beside the printer's name.

Note: The misspelling of "Windows NT Local Print Providor" is Windows', not mine. :)