Webdynpro for Java Configurations for GP

Hi

I am using WD Java to develop applications. Recently, I had to use GP with WD Java. We have not setup JDI out here. To use WD Java in GP, do i need to setup JDI tracks? If yes, please let me know what are all the prerequesites for the same.

What kind of callable objects should I use for these WD Java applications, coz I find plently of WD related callable objects.

Regards,

Murali.