here. If you don't want to use our bash script for installing the kernel, you may install the kernel by going to this page and download the appropriate deb packages.
Linux Kernel 3.8.2 Installation
Open the terminal and run these commands at your own risk:
wget http://dl.dropbox.com/u/47950494/upubuntu.com/kernel-3.8.2 -O kernel-3.8.2
chmod +x kernel-3.8.2
sudo sh kernel-3.8.2
sudo apt-get purge linux-image-3.8.2*