MDV 2009 talking here, with KDE 3.5.10/Compiz/Fusion
Now the main thing is, I like compiz/fusion eye-candy better than KDE4 eye candy. Here's how I did it:
(1) burn and run Mandriva-Free DVD. Or, as an alternative, you could install from the GNOME-ONE CD. But *not* the ONE-KDE CD, it (like "Free" and "Powerpack") contains only KDE 4.1
(2) when it comes time to choose a desktop, DO *NOT* select "KDE". Instead, install with GNOME or XFCE.
(3) After installation and restart, fire up the software manager from "Control Center" and install "task-kde3". It's a virtual package which gets nearly all of KDE 3.5.10 *WITHOUT* getting most of KDE4.
(4) Change your login manager from GDM to KDM (if you like point-and-click, as I do, you do this in the "boot management" part of "Control Center".) Go ahead and set auto-login if you're the only user, as I am. Restart. If you want to get 3d desktop, do it now (in MCC) and the correct KDE3 packages will be auto-magically selected for you.
I'm as happy as a clam! That Gnome "installation" is still present, but will never be used again. (You use GNOME too much, you get warts. Use KDE, no warts. *LOL* I won't even begin to talk about Mono, the disease you absolutely don't want to catch ;)