Rishi...
Since an install is customizable, I'm not sure what was configured when the install was performed. If you download the AS/400 installation manual from the KG(if you don't already have a copy from the install), it will give you all of the default libraries, IFS structure, and DS folder structure information you need, along with suggestions for DS folder/file permissions in NT. At mimimum, you'll have a System, Data Dictionary, Object Librarian, and Install library, as well as Control Table, Business Data, and Version libraries for each path code/environment you might have. Then there will be a library for each package, and if you are co-existent, well, then all sorts of other libraries. My best advice is to get the install manual for your specific release from the KG, and you should be able to pretty well determine the libraries and IFS structures that are used by OneWorld.
Regards,
Jim