My Ubuntu 8.10 running latest Openoffice.org version i.e: 3.0.1 How?

Basically all you have to do is add 3rd Party Software repository. Here's how :

1. System -> Administration -> Software Sources
2. Click Third-Party Software tab, then "Add" and type (or paste) this :
   deb http://ppa.launchpad.net/openoffice-pkgs/ubuntu intrepid main
   
   
3. copy and paste following text in text editor and save it :
   

   -----BEGIN PGP PUBLIC KEY BLOCK-----
   Version: SKS 1.0.10
   
   mI0ESXanRwEEAOTPu1sTcJChTjkA9LkIh6WqiBgPzxNY2p8w18Qt/cE3ev4VyjiIadZtr+fh
   C+kuRRQuRinLV+MzeD7Od3uqyR1plc90lqUeLeKJMgXfCoGMmKwng0qD2gpevIvEEpdlmsRo
   1hutsyRxAL3o/NfFpovg6dWC27Y1Vwwma8UIL5wXABEBAAG0K0xhdW5jaHBhZCBQUEEgZm9y
   IE9wZW5PZmZpY2Uub3JnIFNjcmliYmxlcnOItgQTAQIAIAUCSXanRwIbAwYLCQgHAwIEFQII
   AwQWAgMBAh4BAheAAAoJEGDREhckfRz/4QoEAOJ429PsO5oi1xsnX/lraHACYpHNvk4KVghu
   cY2p6J8M0WTTlfls96jRYGlDBDuyZcfW0W+VJlaiu28u2Y9zEnXTWHMlIk6PiOmLPxXofgDf
   lKRqvBFYdRD8+33TBeD6u6qajNOLYTL08dnqCfVqmJTGZxqXTmYIOF1NdIs0KlF/
   =1y5I
   -----END PGP PUBLIC KEY BLOCK-----
   

   
   click Authentication Tab, import the file you created in step 3,
   
4. Close and Reload, wait until it finished
5. Go to your update manager, OpenOffice will be listed as an upgradeable application, install it.
   
6. Now you have latest Openoffice.org on your Ubuntu 8.10
   

And this is my screenshot :