Installing a printer and using kde as a window manager

[Claus Ladekjær Wilson]

I run Mandrake normally - how do I install the filter for my hp 390 c ?
This was my first install of Debian and I am impressed of performance. I run 
potato 2.2r4
How do I change window managers? And kde isn't on the cdrom's I guess?
I would like to use a 2.4 kernel - how to install such a thing?
-- 
Hilsen / Greetings
Claus Ladekjær Wilson
Kirkedammen 19, 2.th
8000 Århus C
tlf. 86112234
mail: [EMAIL PROTECTED]
***running Linux Mandrake 8.1 kernel 2.4.8