Is it possible to customize magento admin area

We can extend the existing functionality of magento for frontend by copying modules in local area and doing some other required stuff but how I can extend or customize the magento admin area to meet my requirements without touching the core code.

For example I want to extend magento indexing functionality. During re-indexing catalog search Magento add the indexe开发者_如何学Pythond data in catalgosearch_fulltext table and I also want to add the data to the one of the my custom database table, so that later I can look up into this database table when user search for product in my store.

Is it possible to customize magento admin area?

Please guide me.

Thanks

The preferable way to handle this is actually to override the models you want to change using Magento's class override system (both for FrontEnd and Admin changes). That way, you'll have a much easier time upgrading your Magento installations.

Sure! You can customize everything you want.
All admin related modules are in

app/code/core/Mage/Adminhtml  

you can rewrite them.