If the Wireless connection you're attempting to access is your own, you will need to take some steps to discover your wireless connection's authentication password. If however the wireless connection you're attempting to connect to is not your own, don't continue reading unless the person who owns the wireless connection has given you permission to connect to their network.
Anyways, the easy way to discovering your router's wireless connection password would be to check the router's manuals for the default wireless encryption password. If the password listed doesn't work when you attempt to connect to the wireless connection, or if you don't have a manual, try the hard way...
The hard way requires you to directly connect to your router via a CAT5 (Ethernet) cable. Afterward follow these instructions for gaining access to your router's control panel:
Go to Start>Programs>Accessories>Command Prompt. From here type in: ipconfig
PressENTER to execute the command. A list should be returned listing some IPAddresses. Look for the one associated with, "Default Gatewaty."Here is a picture
Afterward open your Internet Browser (Internet Explorer, Firefox, etc...) and type the IP Address associated with the default gatewayinto the address field of the browser. DO NOT add www. or .com.Afterward press ENTER or click GO as if you wanted to visit a website.Here is a picture
Onceyou're at the control panel you will probably be asked to log in. Ifyou do not know your login details you can always try the default. Tofind these you can either search your router's user manual or head tothe online search engines entering your router's manufacturer's name,the router's model #, and the words, "default password" into the samesearch request to bring up the default login credentials. For example:
Linksys WRT54G default passwordHere is a picture
If you still can't manage to log in to your router's control panel you will have to contact the technical support department of your router's manufacturer asking them for assistance in resetting the login user ID and password of the router.
Once you manage to log in to your router's control panel, locate the area of your router dealing with the wireless settings of your router. Once you locate that region make sure the authentication type is WPA-PSK and that the encryption type is TKIP. If those options are not available, just use the WPA authentication/encryption type. Afterward locate the region that lists your router's authentication password. Once you locate it write it down or follow instruction to locate it.
Once you have your wireless password written down attempt to connect to the wireless connection using the password you just wrote down. If it works, hooray! If not, try altering the, "Wireless Mode." While, "Auto" is convenient, not all wireless adapters can work with it. Change between the modes attempting to connect to the wireless connection every time you switch it to a new mode.
If for some reason it will still not connect, consider contacting the person who made your router for assistance in connecting to the wireless connection.