Creating a home wireless network can help to manage your home computers more effectively, as you will be able to transfer and view files contained on any network computer from any other computer in the house. Connecting your wireless laptop to another computer is your home is not much different than connecting two wired computers. The only thing you will need is a wireless router and an Ethernet cable to facilitate the connection.
Purchase a wireless router from an online retailer like Amazon or from a local electronics store. Install the router in your home--plug the wired computer into port one of the router using an Ethernet cable, then reboot the machine to connect it to the home network.
Enable file sharing on the wired computer (using Windows XP) by navigating to the "My Computer" menu, then clicking on the "Tools" menu at the top of the screen, then clicking on "Folder Options," then clicking on the option to "Use Simple File Sharing." If you are using Windows Vista or 7, simply open up the "Start" menu, then go to "Control Panel," then go to the "Network and Sharing Center" and toggle the tab next to "File Sharing."
Set up a home network on the wired computer by using the Network Setup Wizard (for XP) or the Network and Sharing Center (for Vista and 7). To reach the Network Setup Wizard, navigate to the "Start" menu, then the "Control Panel," then the "Network and Internet Options," then select "Network Setup Wizard" from the list. For Vista and 7 users, simply navigate to the Network and Sharing Center (as detailed in step 2) and select the option to "Set Up a Network."
Follow the on-screen instructions, giving both the wired computer and the wireless computer the same "Workgroup" name.
Reboot both machines to complete the connection.