Thanks for the answers. It was really easy as frenzie mentioned.
I just needed to copy the bookmarks file to chrome's folder. Afterwards they automatically appeared in google chrome's quick access bar.
Opera really needs to improve its bookmark system. Until v12 opera had the best implementation. Now it's not as good.
The quick access bar is good, but lacks the ability to search.
I really like the speed dial, it's a good way to access my top 20 pages, but still, opera need a valid bookmark system (or at least a good extension).