We technically can't package Skype, as it's proprietary software. If you download the Skype software from their site, get either the linux-static version or the linux-dynamic version. The major difference is that the static version has qt-4.2.1 linked into it, whereas the dynamic version requires qt-4.2.1 or later to be on your box. Fortunately there is a qt-4.3.0 package in the repository. However, if you don't plan on doing any compiling of programs from source, I would get the linux-static version.
Once you download the tarball, extract it using the tar command like so:
tar xjvf skype-18.104.22.168-static.tar.bz2
Go into the directory to which skype was extracted and read the README file for instructions on installing it.
HTH. Post again if you have further questions.