One needs the 64-bit Windows driver if the OS and ndiswrapper are 64-bit.
Netgear is also very bad with the WG111v2 USB interface, which one do you have??? Some use a prism chipset(usbid: 0846:4240) and some have a realtek chipset(usbid: 0846:6a00).
Use the command (with the USB plugged in) to find out: /sbin/lsusb
If you have a prism device then all you need is the firmware;
http://prism54.org/fullmac.html
If it is a realtek then get the Windows 64-bit driver from Realtek for ndiswrapper;
http://www.realtek.com.tw/downloads/...Downloads=true
Or get the source for Linux from the realtek site listed above and build your own Linux driver.