Don't know if this has been mentioned before but... If you have a child in school (inc nursery/playgroup) you can buy a copy of Office 2007 at a big discount. I just got the Enterprise edition (all the bells & whistles) for £54. And your school gets a small kickback too.
has anyone used any of these companies as I wanted to get some adobe software to show dd a few tricks with flash and it seem incredibly cheap there. But do you just need a basic letter from the school to prove they are a student there and would adobe accept a 7yr old wanting to use it? They have to do quite a few powerpoints so it would be great fun to teach her a few bits in flash.(I have used it in the past so remember quite a bit).