First off, see Viva Vim 7! (installing on Ubuntu Dapper) .
Second off, see Konqueror with Midnight Commander theme on Ubuntu . Now we're all on the same page, with Konqueror (in all its variations) and Vim 7 installed.
Also assumed here is the installation of the ExuberantCtags package, so that ctags can be generated for ruby, php, python, perl, and a host of other languages (see ExuberantCtags) as well as the C language. On my Ubuntu box installation was straightforward with Synaptic.
The main interest here is using (and remembering how to use in between actual programming bouts: different projects hook you on different tool sets) Vim 7 as a lightweight alternative to Eclipse.
That may sound like a mouthful, but we'll see it is not an exaggeration.