Re: wireless network card installed but what next?
Welcome to the party! We were all new once upon a time, so don't feel shy. Ask all the questions you need to. Sometimes we have little pile-ups to give the answer! One question sometimes get 5-6 answers.
sudo means, roughly, Super User (he who can do anything) do this command. modprobe means insert this module and any other modules needed to get it to work properly into the system. ndiswrapper is simply the module you want inserted. When you issue the command and the cursor just pops back to the prompt, it means, OK, I executed that command and I have no errors or warnings to report.
sudo modprobe ndiswrapper
but I have no idea what that does and nothing seems to work.
Can you see the Network Manager icon at the top right? If you click it, you should be able to select your network and connect.
"Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.