Sony PCG-R505GL - Manual (Page 41)

Network Connections
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5 Type up to 32 ASCII characters in the Network name (SSID) box.
6 Click to select the Data encryption (WEP enabled) check box.
7 Click to select the Network Authentication (Shared mode) check box.
8 Click to cancel the The key is provided for me automatically check box.
9 Type between 5 to 13 ASCII characters or 10 to 26 hexadecimal characters
in the Network key box.
10 Click to select the This is a computer-to-computer (ad-hoc) network;
wireless access points are not used check box.
11 Click OK. Your new network name appears in the Preferred networks
window. It may take a few moments for both computer systems to recognize
each other.
Setting Wireless Network Connection Properties