Extract the archive and copy all files to /lib/firmware/zd1211
Open terminal as root and type:
# modprobe zd1211rw
Network-manager applet should recongnize the usb wifi adapter and scan the network.
Otherwise as root type:
# iwlist scan
( Source: http://www.linuxquestions.org/questions/showthread.php?p=3163685#post3163685 )