how can i upgrade to kubuntu9.10 from KDE4.3.2

[bxfq]

I already install KDE 4.3.2 at my laptop,
Now i upgrade ubuntu to the lastest version 9.10,
then I want Upgrade Kubuntu to 9.10.
Can you give me some idea ?
thanks !
best wish
david
Some info about my computer:



david@david-laptop:~$ kate -v
Qt: 4.5.2
KDE: 4.3.2 (KDE 4.3.2)
Kate: 3.3.2
david@david-laptop:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 9.10
Release: 9.10
Codename: karmic
david@david-laptop:~$