32 after detecting the presence of the configuration module such as when an usb flash drive containing the configuration module is plugged into an usb port of a notebook computer the set of configuration information encapsulated in the executable program is used automatically by the executable program to set up the wireless communication interface of the wireless client device 32 in an alternative embodiment where the set of configuration information is saved in a separate data file along with the executable program the content of the data file is automatically used to set up the wireless client device 32 if there are more wireless client devices to set up the steps 260 270 are repeated please also refer to fig3 d which is a schematic diagram illustrating the wlan after step 270 is performed as shown in fig3 d after the successful connection set up between a wireless client device 32 and the ap 10 the removable storage media 50 is removed from the wireless client device 32 and inserted into the device interface 34 u2032 of another wireless client device 32 u2032 which is a wireless printer server attached to a printer 36 if the wlan contains additional aps 10 u2032 and other wireless client devices 32 u2033 that may form another wireless network 30 u2032 as shown in fig3 e the steps 260 and 270 could be repeated on and applied to the aps 10 u2032 and the wireless client devices 32 u2033 fig4 is a flowchart illustrating the process of setting up a wlan according to the second embodiment of.