There is no official support to do this.
You must be kidding!
I just want to add a search engine--baidu.com, in case you are curious--for search convenience. Why does Apple make this so difficult?
I love the build quality of the MBP and the elegance of the OS X GUI, but there are definitely a lot of things about Apple that I am as yet to learn!
Thanks for chiming in, though!
It's at their wikiGlims have a Safari 5 compatible version available to test on their Facebook page (search for it, I don't know the link).