Needed Items for EB2 NIW Self Petition Package???

It seems so much easier to fill out the I-140 and submit the evidence package along with a check (for the 590 dollar fee) in one package to a service center. Can anyone please list the items they included in their I-140 package? Once again, I have no clue where (which service center) I should submit my I-140 package. Can anyone help me with that?

Also when you FedEx/UPS dont you really need a physical address for the service center? I have come across PO Boxes, but FedEx and UPS dont usually accept that. I am thankful for any pieces of advice regarding this.

Immigration Site

National Interest Waiver 1

Other
Difference b/ween S.2611 and S.1932 Moving to I-140 - more confusion Question related to out of status impact on GC application Changing job afer using AP CNNs Moneyline story	Marriage certificate from church Do I need to reapply my LC and will I loose my PD? Potential transferring and relocation, while I-140 pending A question regarding EB-1b premium processing Does Canadian Immigration process has effect on Green Card application?