Fans of retro computing will soon be able to buy a modern PC clad in a classic case. Commodore is making a Windows PC that fits inside a boxy beige shell that looks exactly like its original C64. The 8-bit machine was released in 1982, had 64 kilobytes of memory and became one of the best-selling computers ever. Commodore's updated version will run Windows 7 but also has an emulator capable of pla