I want to create a subnet inside a network, it should get only the Internet but not the network folder..how?

Hi, we have the internet at my workplace, I want to get the service to a computer lab, the lab computer should be able to the share the folders and printers on the LAB network, this is working already, now; I need to get the internet to the lab from the main network ( OFFICE) with no access to OFFICE's folders, can I do that without a server or a domain controller, with a switch only? I tried to use 2 ethernet cards on a computer so it gets the service from OFFICE and applies it to the LAB switch, but I had a problem with addressing them, can anyone help me???

OFFICE IP range starts with192.168.0.1
LAB IP range starts with 192.168.1.1

OFFICE & LAB both need to be on the 192.168.0.0 network or you need to use a router...

permissions on the OFFICE shares would have to not include the User Group of Everyone so that LAB can not connect to those resources w/o a valid user name and password

What you were trying to do with that PC was to use as a router. This is not impossible, but is not recommended. The best way to achieve this is to use a router with 3 interfaces. 1 for internet connection and 1 for each internal network. Then you can configure the router to allow traffic from LAB to the internet but block packets from LAB to OFFICE.

Hope this helps.