If you are talking about the TLG wifi DJ recommends then try following the guide url=http://www.elechouse.com/elechouse/images/product/UART%20WiFi%20Transparent%20Module/UART%20Serial%20Wifi_test.pdf

Make sure you download the divers url=http://www.prolific.com.tw/US/supportDownload.aspx?FileType=56&FileID=133&pcid=85&Page=0

Do pay attention when running the software for setting up the device also remember the baud should be set to an EZ-B accessable rate, 9600

File Wifi Software

If the software can not recognize the wifi card it may be set to auto mode to release it follow the last steps in the guide using the +++ "AT" command to remove it from the state, using a serial terminal.

EDIT: credit to robotmaker Virtual Serial Port url=http://www.hw-group.com/products/hw_vsp/index_en.html

i will check the last step

I recommend using arduino software for the terminal when I did it, hyperterminal and a custom c# applicaion did not work for some reason. There maybe more compatible serial terminals but I was going to use an atmega processor so arduino terminal was already going to be useful.

I just tried the AT command no good,did not work. I will try arduino but i don't have arduino wifi shield, do i need one? or can i just connect rx pin 0 tx pin1

first off you are programming the wifi card, so no need for an arduino sheild, using the usb ttl module that came with the wifi card rx-tx and tx-rx gnd-gnd and make sure your using the 3.3V jumper on the ttl module. the only thing the arduino serial terminal is used for is sending the command through the ttl module to the wifi card.

i wounder if i have a bad usb ttl module, i got it to program the wifi card one time (could not get it to work with ez)but now when i hook up the usb ttl module it can't find and the lights go dim after a minute. I read some that it might be in auto mode that is why i could not get it to work with ez. was going to try and use arduino uno to program wifi board don't know if it will workhttp://linksprite.com/pub/tutorial/wifi_uart_tutorial.pdf

I had problems with the wifi after getting it programmed the ez-b did not have enough current to source the wifi card, must use the 3.3V line and requires 300mA the ez-b could source around 220mA with my 7.4V LiPo. If your going to try and reprogram the wifi card via the UNO you will have to use the AT commands for setting up the cards registers.

on the ez program when you went to connect did you put the ip address in