[Distressed in the desert]

I have a word table made up of 21 Columns each of varying widths. I'd like
to be able to set these columns so that they never change. I've adjusted the
table width to equal the sum of the column widths and typed in the column
widths individually in table properties.
This worked fine with Windows XP but with Vista each time I type something
long in a column eg email address it adjusts all the columns so that the
information fits best. I don't want this!! I'd like the information to wrap
but despite choosing this option it just won't listen!!
The table must conform so that I can email it to other users that aren't
using Vista.
Can anyone help please?!?!?