Questions about Adobe Acrobat pro

Hi,
For a short time ago I download the demo for Adobe Acrobat Pro and have a few question

1. I making a form to a company but don't realy know how to make it look better
for now it look like this http://tasseriet.com/exempelform.jpg but do I realy need to have five lines if I want much information or can I in some way make one big form "square" there you can fill in everything?

2. I use create pdf from a word document but if I want to make changes in the text (or maby do one more enter somewhere) do I need to change the word document and chose "create pdf from.." again or can I make those changes in Acrobat?