The only way to connect wiressly two computers is with an ad-hoc wireless network.
What is an ad-hoc (peer-to-peer) wireless network?
An ad-hoc wireless network, also called peer-to-peer, allows computer on the network to communicate with each other without using a router. Any system that has a wireless network interface card can transmit and receive information from other systems with wireless cards installed.
In most cases, systems connected in a local, peer-to-peer environment cannot access other networks. To access the Internet, for instance, you need a piece of equipment that connects the sytems to the local network â€' for instance, a cable/DSL modem, a host with a shared Internet connection, or a router or access point connected to another Ethernet network.
To set up an ad-hoc wireless network, each wireless adapter must be configured for ad-hoc mode versus the alternative infrastructure mode. In addition, all wireless adapters on the ad-hoc network must use the same SSID and the same channel number.
An ad-hoc network tends to feature a small group of devices all in very close proximity to each other.
Performance suffers as the number of devices grows, and a large ad-hoc network quickly becomes difficult to manage. Ad-hoc networks cannot bridge to wired LANs or to the Internet without installing a special-purpose gateway.
Ad hoc networks make sense when needing to build a small, all-wireless LAN quickly and spend the minimum amount of money on equipment. Ad hoc networks also work well as a temporary fallback mechanism if normally-available infrastructure mode gear (access points or routers) stop functioning.
Here's How:
1. For each computer (device), determine whether the device has Wi-Fi capability.
2. Purchase and install Wi-Fi network adapter hardware in devices that do not possess Wi-Fi capability.
3. Configure each Wi-Fi network adapter to run in ad hoc mode.
4. Test each device's network connection.
Here is the quided tour of making the Wireless Home Network Connection in Windows XP Without a Router
