D-Link DIR-300 User Manual page 26

Section 3 - Configuration
Use the radio buttons to select the desired level of wireless security, Best,
Better, or Good, and then click Next to continue.
Enter a Wireless Security Password in the textbox and then click Next to
continue.
This window displays a summary of your wireless security settings. Please print this
out or record this information in a safe place and then click Save to continue.
The Router will save your new settings and reboot. When it is finished after 1-2
minutes, the opening Wireless Setup window is displayed.
D-Link DIR-300 User Manual 6