Align placed item in Indesign

I’m trying to align image placed in indesign to center of pasteboard. Look up align in the CS3 Dictionary and this is what I got.

tell FormDoc
					set pdf_page to place (item i of PDF_List) on page 1
					set newName to text 1 thru -5 of name of (info for item i of PDF_List)
					align (distribute item pdf_page)
					align horizontal centers
					align vertical centers

Thanks Tim

Forget the align command and just do the math to change the placement to the location that you want.