First: reset router to factory defaults... then:
User's Manual, starting on page 68 "Using the Router as an Access Point"
You can use your My Net router as an extender or access point (AP). Extender mode can:
* Add wireless coverage to a home network without wireless coverage.
* Expand a home network’s wireless coverage.
Note: To use the router in extender mode, the router must be connected by wire to your computer.
To convert the router to extender mode:
1. Click the Advanced Settings icon and then the Admin icon.
2. Click the Device Mode tab. The LAN Connection Type displays.
3. From the Device Mode drop-down list, select ExtenderMode (wired AP). The LAN
Connection Type displays.
4. To configure LAN Connection Type, select Dynamic IP (DHCP) (default) or Static IP,
complete the required fields, and click Save. (See “” on page 53 for details.) The screen
informs you of how long the process will take. The router reboots, and the login screen
displays.
Note: The IP address of your extender is the static IP you assigned or the DHCP IP address assigned by your main router.
http://www.wdc.com/wdproducts/library/UM/ENG/4779-705072.pdf