I have a refurbished computer I bought a year ago. I had a buddy put in an SSD drive as a replacement for the existing hard dive and add ram to bring it to 8 gigs total. So far everything has been fine. I would like to add a second monitor now, so I bought the monitor and a graphics card that could support the monitor, but they will not fit into the case. I am wondering if I can upgrade the case, and possibly the motherboard and processor while I am at it, while keeping the existing SSD, windows 7, the card readers, etc. Will this work? Am I letting the tail wag the dog and should I just find a smaller graphics card?