The guide that you used is a little old. Let's see how far you have made it in the guide. Can you go to the Terminal and post the results for the following:
Originally Posted by Neoki
The first command will help determine what driver your wireless is using. There is a line that contains the word "driver:". It should say ndiswrapper.
lshw -C network
The second command will tell us if ndiswrapper is happy. If ndiswrapper is not installed correctly, this will tell us. It actually provide the version of ndiswrapper, but when it is not installed right, it will give out error messages.
The third command will let us know if the driver that you are using with ndiswrapper is ok. It will need to show "device (14e4:43XX) present" or else it has the wrong driver.
The second and third commands are the main things that you need to see if ndiswrapper is working. From there, we can then start configuring ndiswrapper so that it will work on reboot.