Hello.
Procedure:
In protected/components/CustomUrlManager there is a method parseUrl which is responsible for links' analysis. Using this method you can modify your link, fill the array $_GET and get a standard url "quicksearch/main/mainsearch".
Though it is a non-trivial task and can be completed only as a paid customization. You can get an estimation filling our form "Contacts"
http://monoray.net/contact