Generating Purchase Register Report ................

Hii all,

I am generating a report as Purchase Register which will display all the po’s which are invoiced or received.So i am confused,which table i will take as a data-source for my report .

As of my knowledge, i can take purchTable or Vendpackingslipjour. So,kindly suggest me which table i should use as my data-source and Tell me what is the difference between two tables.

regards,

Jagadis Sahu