I agree with Randy that there should be a way to utilise the Form better than you are Currently.
One field as big as a Screen seems to be very large, doesn't the field itself Scroll as it should do?
Can you post a Zipped copy of the Database with the form on it or at least a Screen Shot of the Form?
There are other ways to control the data than just the size of the field, to get it to fit word, like string length etc.