Internet cafe!

My neighborhood has an internet cafe and she wanted to monitor the time of every customer from the start they used pc and the time they ended, so that she will be paid right by the customer. And she also desire to control the client pc with her...

server(like client and server, but not totally because she don't used a os server), to make the questions short!... What are the good softwares for an internet cafe? Thanks... Even trial versions.(the same with net op)

P.s. Not games..

You go to google and search for cafe manager. you will get a lot of sites...best of luck