How do I convert my wireless router to a wireless AP (Access Point)?
While connected to the main router go Start then Run in XP - (Windows key plus R in Vista and Windows 7), then type in the following, including all the spaces:- cmd /k ipconfig /all -- then press Enter and from the black form that shows up, take a note of the numeric code beside the word "gateway" -- usually something like 192.168.0.1. Type exit to close the black form.
Now connect the router to be converted only to a computer via network cable and log in
Setup the wireless security
Disable the DHCP and change the LAN IP to match the gateway IP but ending in something like .253
Finally connect one of the four LAN ports of the AP to the main router, do NOT use the WAN port.