A potential new client uses Quark 7 for their work so I need it at home in my office.

To cut a long story short I ordered a new unregistered copy off ebay for a really good price without realising it was an educational copy. Now I could send it back unopened but I want to be able to use it. I know you have to activate quark to use it, but does it flag up the student/teacher requirement when you activate it or when you buy it? What I'm trying to say in my stumbling way, is... Am I going to be able to use my software or should I just return it and spend the £800 of a full copy, something I really don't want to do!