Hi all, I've been a long time reader but a first time poster. I desperately need help and maybe someone can give me advice with my problem. My twin brother started a very small business in our home country and I promised him that I will help him setup his shop. It will be an Internet Cafe + Games and customers rent the computer in an hourly basis. It consists of 14 computers total - One server and 13 clients. *The Server is just a normal PC with more beefy memory/processor* All computer have Windows XP professional (32-bit) and all are custom built. All the computers are already there but I'm still figuring out how to setup the network so we are still not in business. He already bought a D-Link 16-port Switch (10/100/1000) and the ISP also gave a wireless router (with 4 ethernet ports - wireless will not be used). So the hardware we currently have are 14 computers, 1 router, 1 Switch. The server has 2 ethernet ports that came built-in to the mobo (Msi P55-GD85). Now, my main problem is setting up the network of the shop. I was thinking that since the server mobo has 2 ethernet ports, it will be something like this: ISP Router --> Going into the first ethernet port of Server --> then Second Ethernet port FROM the Server going into --> 16-port Switch --> 13 Client PCs. The reason why I like this setup is that some customers, believe it or not, will do anything to screw you like intentionally putting viruses, key-loggers, change the passwords of your router, etc. So I really need all the 13 computers to be solely connected to the Server. For example, if the server is down, no one can't access the internet. Every other computer should pass through the server and should NOT work independently. However, I'm thinking of how I would pass internet to the 2nd ethernet since it is only connected to a Switch -- I'm guessing Network Internet Sharing from the 1st ethernet port? Do you think the 1st Diagram is plausible? Or should the diagram be: ISP Router --> Going into the first ethernet port of Server --> then Second Ethernet port FROM the Server going into -->ANOTHER ROUTER?--> 16-port Switch --> 13 Client PCs. Oh, one last thing, the Server will have a program that will monitor the time usage of each computer that is currently rented - so that my brother will know how long the customer used the PC. Also, I'm thinking of installing a Bandwidth Manager so my brother can throttle and regulate PCs that use a lot of bandwidth. I know the basics of networking as I've done it before. But it never involved any sort servers and such. This will be my first time doing this kind of thing. Unfortunately, since I'm in a different country, I'll be dictating to him what will be done which makes it extra difficult. If you think that both diagrams will not work. Please feel free to give a totally different diagram or any advice. Hopefully no additional hardware will be purchased because my brother is running low already. Thank you so much!