Help with a complex mail merge

[bekz]

Hi everyone. I have a very tricky piece of work to complete. I've put the hours in and come up with my template in word for the mail merge. It all works and is looking good. The only problem is there are some parts that I do not want to show up (and therefore print off) if the value of a particular data field is nothing. This is very hard to explain, so I have attached a pdf which (hopefully) illustrates what I am after. If you can help I would be very grateful.