Sony PCG-NV290 - Manual (Page 40)

VAIO Computer Quick Start
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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 and 13 ASCII characters or 10 to 26 hexadecimal characters
in the Network key box.
10 Click OK. Your new network name appears in the Preferred networks list
box.
Setting Wireless Network Connection Properties