1. Copy the files rt73.INF, rt73.sys and Dr71WU.sys to a folder on your Linux Desktop (rt73.INF can be found in the Windows/inf folder. The others in the Windows/System32/Drivers/ folder).
2. Open the folder in konqueror and press F4. Log in as su.....
ndiswrapper -i rt73.INF
#There should be no response if this worked
#unloads & reloads ndiswrapper
#see if ndiswrapper accepted the driver, found the hardware, and if there is an alternate driver that may need to be blacklisted)
#shows all network interfaces, a working ndiswrapper will show up on wlan0
3. Go to System/Mepis/Mepis Network Assistant. Set Interface Configuration Mode to manual. Under the Wireless tab enter your SSID information and WEP information. Click apply and reboot machine