Allied Telesis AT-WA1004G - Manual (Page 56)

PC Configuration
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4. Click on the Properties button. You should then see a screen like the
following.
Figure 19 TCP/IP Properties (Win 2000)
5. Ensure your TCP/IP settings are correct, as described below.
Using DHCP
To use DHCP, select the radio button Obtain an IP Address automatically.
This is the default Windows setting. Using this is recommended. By
default, the Wireless Router will act as a DHCP Server.
Restart your PC to ensure it obtains an IP Address from the Wireless
Router.