I just changed my windows vista to Ubuntu yesterday. Today, I downloaded the full KDE package from synaptic package manager. Then, I downloaded the KDE Plasma desktop from Ubuntu Software Center.

Now, I have a lot of KDE applications available, but it looks like they are all running in the Gnome desktop. I'm pretty sure I haven't actually changed my OS to Kubuntu yet. How do I do that and still be able to switch back to Gnome if I want to? And how do I get the Plasma Desktop to be my default desktop?

Thanks for any help.

It is inappropriate to double post, kindly do not do so