"Import" a sourceforge project into Xcode

I am new to OSX and Xcode. I got a macbook with Xcode 3.0 and downloaded the C++ of a sourceforge project, which comes with the structure:

config.mk
doc
include
开发者_开发百科lib
Makefile
soruces

in this kind of projects I usually work with "vi" and edit the ncesasry files. Here I want to debug the code and use subversion. What is the best way to "import" this source code into Xcode? Should I just only add source files or the entire tree?

TThanks

• Download
• Open folder by clicking on the triangle
• find already ready Xcode icon click on it...