Is it possible to update from 10.5.2 to 5.8?

[Dano77]

Last nite, i tried 3 different installs of iATKOS_v7 each time picking different drivers and things to install hoping it would boot but continuing to leave me with the "You need to restart your computer" thing... last shot i think it was somethign to do with intel speedstep or power mgmt of the processor which is strange...

But anyway...

Reinstalled Kalyway 10.5.2 on my GA-G31M-ES2L

for some reason the kalyway disc installs with ZERO issues
on this board except onboard lan (and i know how to fix that)

Anyway, long nite... BIG QUESTION:

I noticed OSX has gone and downloaded apples updates to
10.5.8 and it's taken the liberty of downloading all 800+MB
of updates

Itunes, Airport, Quicktime etc... and this Mac OX Update Combined
10.5.8...

Is there **ANY** way of installing that and having it work?

Dan