i wanna to example for install kernel 2.6.37 :
just simple :

sudo add-apt-repository ppa:kernel-ppa/ppa
sudo apt-get update
sudo apt-get install linux-headers-generic-lts-backport-natty linux-image-generic-lts-backport-natty

And if you want to another kernel version you just press several tab at sudo apt-get install linux-headers-(TAB).. so will out the list linux headers available for the downloads.. hehe great
this list linux-headers for my computer :

 linux-headers-2.6
linux-headers-2.6.31-10-rt
linux-headers-2.6.31-11-rt
linux-headers-2.6.32-21
linux-headers-2.6.32-21-386
linux-headers-2.6.32-21-generic
linux-headers-2.6.32-21-generic-pae
linux-headers-2.6.32-21-server
linux-headers-2.6.32-22
linux-headers-2.6.32-22-386
linux-headers-2.6.32-22-generic
linux-headers-2.6.32-22-generic-pae
linux-headers-2.6.32-23
linux-headers-2.6.32-23-386
linux-headers-2.6.32-23-generic
linux-headers-2.6.32-23-generic-pae
linux-headers-2.6.32-24
linux-headers-2.6.32-24-386
linux-headers-2.6.32-24-generic
linux-headers-2.6.32-24-generic-pae
linux-headers-2.6.32-25
linux-headers-2.6.32-25-386
linux-headers-2.6.32-25-generic
linux-headers-2.6.32-25-generic-pae
MORE_ _

just example right… so you can try anything you want.. lol haha

thanks to ubuntu-guide🙂