I have installed Geronimo 2.0 in my PC, Now i want to replace that with Geronimo 3.0, I didn't find any configuration steps in the document, Is it similar to the 2.0 version containing wrapper files? I mean the configuration process is same as 2.0 or  different? I found advanced features in Geronimo 3.0 document... And what version of java needed for 3.0 version.?