PC Activity Monitor Professional (PC Acme Professional) is designed for monitoring user's PC activity. PC Acme Professional works under Windows 2000/XP operating systems. All the data collected while monitoring are saved to the encrypted log file located on the user's machine. The monitoring program works in the background, transparently for the user, on the level of OS kernel driver. PC Acme Professional supports UNICODE, i.e. it is able to record even the languages with hieroglyphic writing. Another strong side of PC Acme Professional is its protection measures. It is completely hidden, and even an experienced user cannot locate, stop or destroy the program. Each event has its own timestamp. Information from the log file after it has been correspondingly decoded and operated is entered in the data base (DB). Reports from the DB are converted to HTML format for more convenient viewing in browser. PC Acme Professional supports client/server architecture and allows to monitor all PCs in the local network from a centralized control center. The program is totally invisible and undetectable for firewalls and other software.