First of all select your version. It should default as 10. you could try the Cooker rpms but that path leads to stress and eventually a mad chainsaw run through your home town until you are shot down in the night by the police.
Select your nearest file mirrors from contrib, main, updates and plf and add a prefix. I use Mandrake_
click the proceed to step 3 button and you get a nice little list of your rpm sources.
Open a terminal as su to root (cause you are not logged on as root tight ?
)
Copy the list and paste it into the terminal window
wait a bit
open the install software thingy and select lots of cool stuff
Vaio