need some help.

I have two columns......1st div is a label, 2nd div is a basically a textbox.
now if there is an error.....i want the error message (another div) to show up below the textbox.
I can't seem to get them to line up with CSS. If it comes close in IE then Firefox is out of whack and viceversa.

Any help is greatly appreciated!

Thanks.

p.s. in this format
Name: (textbox)
(errormessage)