Ok, after you have downloaded ndiswrapper and put the file in it's pace...where you can get to it from the CLI:
Open the CLI and type
cd /directory (directory being the location of ndiswrapper).
*Note: Untar it first.
Ok, then type:
make
And then
make install
You might need to get kernel sources installed for this, so if you get an error go into a package manager and look for Kernel sources, and then install them.
After that, insert the Windows drivers into the CD drive.
Open it in My Computer or whatever and locate the .inf file drivers for YOUR card. Copy them to the desktop.
Then, go back into the CLI and type ndiswrapper -i /locationoftheinf
Type modprobe ndiswrapper and then the lights on the card should come up.
Now, you need to enter the WEP key if you have one and then ssid.
ifconfig wlan0 essid "blah"
ifconfig wlan0 key open (or restricted) "213412341234"