Welcome from a fellow learner I have linux (Redhat) in dual boot modus on my main machine for a few weeks now. Once I got through the nuisance of configuring my adsl connection I rarely booted Windows again. If it weren't for my new habit of listening to web radio combined with my temporary inability to get XMMS or Realplayer working, I'd sure be a Linux only guy by now. Also, I'm not sure if I'll be using Qanta a lot...haven't really found my html tool for linux yet.
Heini, try downloading the later real player from here [scopes.real.com], grab the libc6 i386 rpm version.
You may need to remove the older version first, because the Real rpm may not remove it for you.
4eyes, with a P200 and 128M of ram KDE is going to feel pretty slow. If you want something that feels sort of like windows you may want to check out ICEwm [icewm.org]. You should be able to easily via your package manager. If you give ICE a try also install icepref, it is a nice configuration utility.
<added> Also, congratulations to the two of you, from a fellow learner.