No the only time you would need more than one I864 would be if you needed ajoint sponsor the foreign national spouse is not considered a jointsponsor even if you include his or her income. If you have decided to embark on the immigration process without an attorneywhich I dont recommend please be certain to carefully read all of theinstructions to all of the forms. And if you have any doubts about theforeign nationals eligibility for permanent residence you should consultwith an immigration attorney before beginning the process. Best of luck.