How to Install Ubuntu 12.10 or Upgrade to Ubuntu 12.10 (Quantal Quetzal) from Ubuntu
 

How to Install Ubuntu 12.10 :-

Get an Ubuntu 12.10 installation DVD or CD from www.ubuntu.com official website. You will get 32 bit (recommended) or 64 bit version.

Insert the Ubuntu 12.10 DVD into your system DVD drive

your system BIOS (boot order) is set to boot from CD/DVD. Before a hard drive

Restart your compter. If you do not see the ubuntu logo.

Choose the Try ubuntu option in order to cheek that your system keyboard, internet, screen etc., is correctly recognized by ubuntu.

After checking all click the “Install ubuntu” button

you will see Installation wizard.

First you have to select language:- select your desired language and press continue button.

Now you will see preparing to install ubuntu box and select the desired option and press continue botton.

Now you will get:- installation type in this you will see three options
first option is “Install ubuntu alongside them” (if you want to install ubuntu and windows (Dual Booting) in one system scelet this first option and Install.

The Secound option is “Erease disk and install Ubuntu” if you want to install only ubuntu oprating system in your system you will scelet this secound option, disk partion don by automatical.
WARNING:- this option erase all data and systems that are currently on the disk.

Third option is “some thing else”
If you want to manually setup your partitioning scheme., select the some thig else option.

Chose one option in this box and press continue button

you will see “Where are You?” box:- select the location close to your location, click continue button

Now you will see Key boad layout box:- select the correct key board layout click continue button.

Now you will see who are you? Box :- in this box you have to enter your name and password etc., and press continue button.

When the installation wizard finishes, the Installation complete window appears click Restart now to restart your system. Ubuntu 12.10 is now installed on your system.

How to Upgrade from Ubuntu 12.04 to Ubuntu 12.10 :-

First open command prompt run this command “ update-manager -d “ and press enter button.

Now you will see “Update Manager Box”. In that click setting button.

Now you see a new box called “ Software Sources” in that you go to updates button. In that you will see four option first, secound and forth option you have to seclet and leve thired one.

And now you put “Dily “ option on automatically check for updats.
Put “Display imediately” option on when thre are security updates.
Display weekly option.
When there are other updates. In “notity me of a new ubuntu verstion” you have to put “for any new version” option and close it.

Finally, click ‘Upgrade’ to begin the upgrade. Before you upgrade, please make sure to install all pending updates. Click ‘Install Updates’ button first and install all updates before upgrading.
That all Your system now upgrede to 12.10.

Please do not post such long content, which is useless to others. I think you've just copied all this and paste here, so we're not going to read all these steps. I can't see where's problem in this?
You can achive this upgradation using update manager. And everything is clearly documented on Ubuntu website ( http://www.ubuntu.com/download/desktop/upgrade ).

So please be specific to problem, before anybody ask you to show the steps you performed. Have good luck!