How do i upgrade KDE 3.55 to KDE 4,1?

[Hyper Tails]

Hi i run vista and hardy ( i don't use vista anymore) and i say kde 4.1 in the kubuntu site and i say it and i want it and i was wondering.
how do i upgarade kde 3.55 to 4.1

please tell me.
thank you

[Hyper Tails]

.................................................. .................................................. .................................................. .................................................. .....................................

[dualpretop]

1. Add deb http://ppa.launchpad.net/kubuntu-members-kde4/ubuntu hardy main to your /etc/apt/sources.list.

2. If you do not have kubuntu-kde4-desktop installed, simply type sudo apt-get update && sudo apt-get install kubuntu-kde4-desktop and answer the questions. Both of these options are to be typed at the command prompt

http://www.kubuntu.org/news/kde-4.1

[Hyper Tails]

i got it working but how do i get it to look like this?

and how do i remove the kde 3.5.5 software?

[Hyper Tails]

help?

[Hyper Tails]

please?