apt-get uses a set of online servers to automagically download the program you want and all of its dependencies.
You need to tell it what servers to use. Use the guide I linked you to (wait for the page to load completely first, it'll automatically take you to the section in question) to tell Debian which servers have GCC and the files it needs to run.
Once you've done that, the command I gave you will no longer tell you that the package doesn't exist. That should install gcc, and you can then run
or "make install" depending on the directions for ndiswrapper.
You need to tell it what servers to use. Use the guide I linked you to (wait for the page to load completely first, it'll automatically take you to the section in question) to tell Debian which servers have GCC and the files it needs to run.
Once you've done that, the command I gave you will no longer tell you that the package doesn't exist. That should install gcc, and you can then run
Code:
./configure
make