Setting interval for dynamic buttons

1 
for(i=0;i<folderNamesArray.length;i++){
	current_y = this.mc_folderButton._y;
	this.mc_folderButton.duplicateMovieClip("mc_folderButton"+i,i);
	setProperty ("mc_folderButton"+i, _y, current_y + i*20);		
	set("mc_folderButton"+i+".folderName", _root.folderNamesArray*);
	
}

ok…i’m making a dynamic folder buttons… the above code i did ran successfully… now i want the dynamic buttons to display like at 1 sec interval between each button… where and how do i insert the setInterval method…?

thanks…