row height/width auto adjusts when I move print margins trying to print in center of page

hello
wondering if anyone can help a noobie out please.

I have a workbook I created for work that has approx 50 pages and each page has a document with multiple set row heights (not all the same height)
when I print a page, the document page prints to the top of the page regardless of the margin size I set AND regardless of whether I have center vertically/horizontally checked when I print.
ALSO if I try and adjust that print margin height for some ungodly reason it changes all my ROW heights in my document page ( kinda like its trying to adjust and auto fit the print page)
Its really really annoying and I have tried everything I can think to stop it happening. I've also tried swapping printers ...to no avail.
If anyone can please explain to me how I can SAVE my document page row heights and widths so they will NOT alter even if I play about with the actual margins to center the document when printing I will be super grateful.
I hope I have explained this clearly enough.
I am using excel 2007

thanks in advance
D

It sounds like all you need to do is set Page Breaks. Go to View on the Ribbon, then select "Page Break Preview". You'll see a bunch of blue dotted lines - these are where your printer will start printing on a new page. You can add, remove, and move Page Breaks as you need.

Hope that helps!

no dice><
I guess to reiterate the main issues are I cant print in the center of may page; for example if I put margins for top and bottom at .5 and the sides at .6 you would be forgiven for assuming the actual body of the document I then create would print evenly between those margins but what happens is a/ it prints for example .2 from top 1.5 from the bottom and evenly .13 from each side(which is clearly ignoring the margins i set in the first place) AND 2/ as it prints it alters every single row height and width of my document ( for no apparent reason I can figure out)thus skewing my page layout and making it impossible to print double sided and bind the entire workbook.
and I do not understand how to make it stop.
my document is within the lines your referring to AstToTheRegionalMGR
any other ideas?