Now I managed to change it to duckduckgo by following this:
http://talk.maemo.org/showthread.php?t=88518&page=2

Now I would like to look into that html file from the wiki to combine these, if needed. Will have a look at that.. (I hope)

I have another request for the smartbar in MicroB, it displays your history in if you start typing in the bar. Would it possible to limit these results to bookmarks as the bar tends to get slow if you have a big browsing history.
Those history/urls I mean can be found in
/home/user/.browser_typed_urls

Actually now I am thinking of this, I only need to edit this file to my likings and remove the write acces to this file.