If you wish to connect your laptop to your PC for sharing the resources and files. You can use Either a Wireless network or Ethernet adapter. Since you are looking for a small setup (I guess so). You can configure an ad hoc network.
Most of the latest laptops comes with a Wireless card and and ethernet card. However in the case of PC's there might not be a wireless card. If you are looking for portability and working from distances (say from the other room) then you can buy a wireless card for your pc and setup a small wireless network.
Okey let us see how to setup an ethernet connection (it's a wired connection between your pc and laptop to enable networking between them)
You need to make sure both your computers have an ethernet port and you need a Crossover cable to connect between them (get at least 3 meters so that it will be more comfortable.)
A similar port will be there in your laptop too. Connect your crossover cable to both pc and the laptop (you can buy a cross over cable from most of the local computer shops).
Now you need to setup the ip addresses for both the computers.
Let's set 192.168.1.1 for your laptop and let's use the same ip as a gateway. We will be using 192.168.1.2 as the ip address for your pc and the same gateway (192.168.1.1). Now let's see how to setup IP Addresses
With the following instructions you can fill the above values in both the laptop and pc by individually repeating these instructions given below. Once you set both the ip addressess and gateways your network is ready to go. (You don't have to worry about the dns addresses since we are setting up a small network of two computers)
In your case the connection name will be unknown or something like that where as in the image it is Internet.
If you are on Windows Vista or Higher, Go to Control Panel (Start menu -> Control Panel)then click onNetwork and Sharing Center and you can see your active connection there; click on the View Status
Then a new dialog box will appear; click on the Properties button there
once you have in the properties dialog box; double click on the Internet Protocol Version 4 (TCP/IPv4).
Now you will get a new dialog box where you can insert your ip address, gateway and dns.
Now you are all set and ready to go.
If you have trouble following this solutions please mail me at nextdoornerd AT gmail DOT com and I will help you.