Cheers - thats a good start.   Will at least keep the form size down.

Just noticed that on a long form, if you have some fields which are required and you forget to enter information, when you click on submit (without entering the 4 letter code), the captcha disappears and you are still down at the bottom of the form - it should at least take you up to the question (or first required question) that hasn't been completed

If you do enter the Captcha code, the same as above still occurs - this is using Firefox.

Breaking up a long form is perfect.  Earlier I requested sections where you could enter headings (you said much like a survey) - this helps break down long forms.  Many websites use a step system to break up forms - far more user friendly - with a breadcrumb trail highlighting which step in the form completion they are in.  They can also go back - so if they are on Step 2 out of 4 they can go back to Step 1 but not to step 3 until step 2 has been completed.  If they are on Step 2 and go back to Step 1, when they go back to Step 2 it should remember what they have already entered.