There are two ways to install ndiswrapper if you don't have internet connectivity. The first and easiest is to get out the install CD with which you installed Ubuntu. Drop the CD in the tray and navigate to pool > main > n > ndiswrapper. Right-click both ndiswrapper packages and select 'Open with Ubuntu Software Center' and install the packages.
The other way is to go here and search for ndiswrapper-utils and ndiswrapper-common appropriate to your Ubuntu version; quantal, precice, oneric, etc., and appropriate to your architecture; 32- or 64-bit. Find out here:Download the packages on some connected computer and transfer them on a USB key or similar to the desktop of your Ubuntu machine. Then open a terminal and do:Code:lsb_release -d archhttp://packages.ubuntu.com/Code:cd Desktop sudo dpkg -i ndis*.deb
After you have finished installing ndiswrapper, post back your progress and we'll be happy to help.