Comment 16 for bug 1023645

Well, I thought the posts were editable, but now I noticed I only can hide them... ;)

Anyway, to summarize, steps updated:

1.Download the latest tarball from http://sourceforge.net/projects/ndiswrapper/files/testing/
2.Create the folder /usr/src/ndiswrapper-1.58/
3.Extract there the source code of the ndiswrapper module found in the tarball. It is located in the "driver" subfolder. Copy only the contents of this directory, not the directory itself.
4.Copy the dkms.conf file from /usr/src/ndiswrapper-1.57/ to the /usr/src/ndiswrapper-1.58/ folder as well. Open it with a text editor and change the version of ndiswrapper listed there to 1.58.
5.Run these commands in your console in order to build and install the module using dkms:

sudo dkms add ndiswrapper/1.58
sudo dkms build ndiswrapper/1.58
sudo dkms install ndiswrapper/1.58

Try the module using "modprobe ndiswrapper" or add it to /etc/modules directly if you want it running every time at system startup.

I hope now the steps will be easier to follow by other people with the same problem.