Assume, you've installed software on server and client computers. Lets proceed to server program setup (where cafe owner and operators work). Note, all the customizations should be done having Administrator priveleges.
Launch Setup.exe (Start->Programs->Internet Cafe->Setup):
Start with "Screen Resolution" group. Choose minimal screen resolution that allows you to fit number of client computers in your cafe. Selecting 800x600 allows to connect up to 16 client computers. The higher screen resolution, the bigger amount of client computers can be connected. Maximal number of allowed client computers is 48. It requires 1280x1024 to be selected.
Next, in "General settings" choose exact number of client computers (or game consoles) working in your cafe (excluding computer of administrator). You don't need to change server port (850) except the case you know what you are doing. Program uses TCP and UDP connections, ingoing and outgoing of this port number. If you have a reason to change server port number, don't forget to set the same port in client program settings. Warning, don't select port numbers 852, 853 - they are in use of automatic configuration of client programs.
"Control via internet" group allows you to set up remote access to program reports via internet. Again, don't change HTTP port, but enter password to access feature. The username is "boss".
Using "Reminding signal settings" you can configure sound reminding operator that client computer has paid time out and customer should either prolong computer rental or finish work. Reminder work using embedded in motherboard speaker (PC Speaker) or using selected .wav file plackback. Program includes sample file (example.wav).
Software allows changing currency name. English version uses "$" character by default. You can also rename the default tariff names (Games, Internet). You can do that in security settings, interface tab.
Server program requires TCP/UDP netword port to be allowed in firewall software. Is automatically enables them in Windows Firewall. In case you have additional Firewall software, you should configure it manually.
You should disable time over internet synchronization for server and all client computers. Once you setup server computer system time, tell you operators that they are not allowed to change system clock back or forward. Sometimes admins change system clock back to allow shareware program with limited term of usage to continue operate. They should NOT do that. They can also try to cheat "Internet Cafe" software by changing system clock back. It is not possible as "Internet Cafe" will know about it and report to cafe owner. Summary: tell your cafe operators that changing system clock back/forward is strictly prohibited!
Proceed to client program setup.