For Part II you write in where you reside on Line 9 and on Line 10 thewithholding rate from to 30 depending on which article of the USTrinidadtax treaty applies to you. Then write in the type of income and the treatyarticle that applies to your income. The most common are Article 9 forbusiness profits or Article 11 for personal services but not knowing yourparticular circumstance I cant say if one of those is correct for you. Part III only requires your signature and the date signed. You are attestingthat the statements in Part III are true.