The service version of the WinLPR operates an a Windows NT/2000 service. It cannot run on Windows 95/98/ME. It requires extensive setup and configuration, and should only be used in circumstances where the standard WinLPR application cannot be used.
If you purchase the WinLPR, you have also purchased the WinLPR service. You may use either or both for each computer you license, however, only system administrators familiar with NT service operation and maintenance should configure the WinLPR service.