download linux kernel 2.6.33.2

[axel]

Greetings !

I am running Ubuntu 8.04 with BIOS 2.6 24-27-generic.

Quite often , on Startup I get "Unable to obtain Operating System"....or
words to that effect...and that is as far as it goes.
I have to reboot and go thru the F12 ...harddisk ...etc.to get things
going.

So... I tried downloading LINUX KERNEL 2.6.33.2 ...which I managed to
do ...up to the point of "save file".

The problem is , that I have been unable to "Install".

Would somebody be so kind as to point out how I can proceed ?
With thanks
Axel.