A java/Oracle issue... where is oracle.aurora.memoryManager.callback?

[Wallex]

Heck... I wonder what kind of trouble I am getting myself into this time. As we venture on in our project, My partner and I have come accross a small 'issue': we can't find a class. After installing the oracle 9i server on two of the three machines (since those two were the servers) we had no problems running the java code, but as soon as we took it to a third machine (the old almost obsolete Pentium II which was going to server as 'client') we get compilation problems. Apparently... jdk1.4.0 Standard Edition does not comes with many of the classes we needed, so we had to 'import' them from the other pc's. We've managed to import the ejb classes and orb classes as well.. but now we face yet another classDefNotFound exception: oracle.aurora.memoryManager.callBack. We can't find this class no matter how hard we look for it! It's kinda hard doing a 'search' because these classes come packed in a .jar file usually.. and I keep looking everywhere for it without any luck. We tried installing the oracle client package on the machine hoping it would include the classes we needed.. but nope, it wasn't there either. Does anyone has any idea of what should be the filename where this elusive class is hidden?
And I pray that once I resolve this issue there won't be another classDefNotFoundException waiting to be resolved..

EDIT: Ah nevermind... I managed to find a file called Aurora.zip and it contained all the classes I needed. Phew this has been quite an odyssey! I can rarely believe myself that the project is working. Got to be one of the great things about programming.. the thrill of fixing bugs and getting things to work.