My hard drive clicked a few times on startup, I made backup copies, then it died. I removed the Quantum Fireball 3.5 series 10GB hard drive and want to replace it to have a 2d Computer for the kids schoolwork. I read a number of posts recommending a Seagate Barracuda HD and had some ???. Is it simply plug and play with that particular drive? Any limit on size? Best place to purchase?