PO & Invoice Creation Scenarios

Hi! Gurus,

As i have recently completed my SAP Certification. I need your help to sharpen my skills in SMARTFORMS generation.

I also want to know what is the use of NACE transaction. And how to integrate smart form print program to particular application.

I will be highly thankful if someone can provide me specifications and details do that i can sharpen my skills in FORM Printing.

Regards,

Digvijay