Ok guys and gals so my moms desktop computer is an antique and ive decided i wana build her a new one for her birthday which is in June, but ok so point being, is it possible for me to use her old gateway case? like do i need to buy a new case or can i keep the old one? and other part of the question is do we have any recommendations for what to put in it. Basically this is what she will use it for: email, searching the web, word processing, taxes, and putting pictures on it. I basically don't wana spend anymore then 500 or 600 if that is even possible, if it is not please let me know.