Please read the pinned topic How to Request an App if your not certain on how to make a request, then add the necessary info back into this thread.
Slimbrowser has been mentioned before on the site also. You can change the default search engine under the options tab, the developers have a forum for simbrowser, you can ask any question there. Check on the homepage
You can also find older version of slimbrowser on the developers homepage.
http://www.flashpeak.com/sbrowser/whatisnew.htm