You'll need to install the libc-dev and libc6-dev and probably linux-headers using the the package manager (apt-get, aptitude, or the graphical adept). However, it's probably easier just to use the package manager to install the binary driver directly --
this page gives directions on how. Note that when I installed 7.04 the binary driver was a couple revisions behind and did not pick up my 8800GTS so I had to go and get the latest driver from Nvidia directly.